UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

Form 10-Q/A

(Amendment No. 1)

Commission file number 1-7293

TENET HEALTHCARE CORPORATION

(Exact name of Registrant as specified in its charter)

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days. Yes ý  No o

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer (as defined in Exchange Act Rule 12b-2).     Large accelerated filer ý  Accelerated filer o             Non-accelerated filer o

Indicate by check mark whether the Registrant is a shell company (as defined in Exchange Act Rule 12b-2). Yes o  No ý

As of September 30, 2005, there were 469,406,255 shares of common stock outstanding.

Explanatory Note

We are filing this Amendment No. 1 on Form 10-Q/A to Tenet Healthcare Corporation’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2005, which was originally filed with the Securities and Exchange Commission (the “SEC”) on November 1, 2005 (the “Original Form 10-Q”), to reflect the restatements of our Condensed Consolidated Balance Sheet at September 30, 2005 and our Condensed Consolidated Statements of Operations, Comprehensive Income (Loss) and Cash Flows for the three and nine months ended September 30, 2005 and 2004, and the related notes.

We reported the decision to restate this information in a Current Report on Form 8-K/A, which we filed with the SEC on March 9, 2006. The decision to restate was based on the findings of an independent investigation conducted by the audit committee of our board of directors. Part I of this Form 10-Q/A contains more information about these restatements in “Note 15 - Restatement of Financial Statements,” which accompanies the Condensed Consolidated Financial Statements in Item 1.

Although this Form 10-Q/A contains the Original Form 10-Q in its entirety, it amends and restates only Items 1 and 2 of Part I, Item 1 of Part II and Exhibits 31(a), 31(b) and 32, referred to in Item 6 of Part II, of the Original Form 10-Q, in each case solely to update the status of the previously disclosed SEC investigation of our contractual allowances and to reflect the restatements. No other information in the Original Form 10-Q is amended hereby. This Form 10-Q/A has been repaginated and references to “Form 10-Q” have been revised to refer to “Form 10-Q/A” as applicable.

Except for the amended information referred to above, this Form 10-Q/A continues to present information as of November 1, 2005, and we have not updated or modified the disclosures herein for events that occurred after that date. Events occurring after the filing date of the Original Form 10-Q, and other disclosures necessary to reflect subsequent events, have not been addressed other than in our Annual Report on Form 10-K for the year ended December 31, 2005 (the “2005 Form 10-K”), which we filed with the SEC on March 9, 2006.  The 2005 Form 10-K includes our restated Consolidated Financial Statements as of December 31, 2004. All balances as of December 31, 2004 presented in this report reflect the restated amounts as presented in the 2005 Form 10-K. For further information on the restated Consolidated Balance Sheet as of December 31, 2004, refer to the audited Consolidated Financial Statements and notes in the 2005 Form 10-K.

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TENET HEALTHCARE CORPORATION

TABLE OF CONTENTS

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PART I.

ITEM 1. FINANCIAL STATEMENTS

TENET HEALTHCARE CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

Dollars in Millions

See accompanying Notes to Condensed Consolidated Financial Statements.

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TENET HEALTHCARE CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

Dollars in Millions,

Except Per-Share Amounts

(Unaudited)

See accompanying Notes to Condensed Consolidated Financial Statements.

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TENET HEALTHCARE CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Dollars in Millions

(Unaudited)

See accompanying Notes to Condensed Consolidated Financial Statements.

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TENET HEALTHCARE CORPORATION AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

Dollars in Millions

(Unaudited)

See accompanying Notes to Condensed Consolidated Financial Statements.

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TENET HEALTHCARE CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1  BASIS OF PRESENTATION

This amended quarterly report for Tenet Healthcare Corporation (together with our subsidiaries, referred to as “Tenet,” the “Company,” “we” or “us”) supplements our Annual Report on Form 10-K for the year ended December 31, 2004 (“Annual Report”). As permitted by the Securities and Exchange Commission (“SEC”) for interim reporting, we have omitted certain footnotes and disclosures that substantially duplicate those in our Annual Report. For further information, refer to the audited consolidated financial statements and footnotes included in our Annual Report.

We are an investor-owned health care services company whose subsidiaries and affiliates (collectively, “subsidiaries”) operate general hospitals and related health care facilities, and hold investments in other companies (including health care companies). At September 30, 2005, our subsidiaries operated 73 general hospitals, including four hospitals that are part of discontinued operations not yet divested, serving urban and rural communities in 13 states. We also owned or operated various related health care facilities, including: a small number of rehabilitation hospitals, a specialty hospital, skilled nursing facilities and medical office buildings—all of which are located on, or nearby, one of our general hospital campuses; physician practices; captive insurance companies; and various other ancillary health care businesses (including outpatient surgery centers and occupational and rural health care clinics).

Certain prior-period balances in the accompanying Condensed Consolidated Financial Statements have been reclassified to conform to the current period’s presentation of financial information. These reclassifications for discontinued operations as described in Note 3 have no impact on total assets, liabilities, shareholders’ equity, net loss or cash flows. Unless otherwise indicated, all financial and statistical information included herein relates to our continuing operations, with dollar amounts expressed in millions (except per-share amounts).

Although the Condensed Consolidated Financial Statements and related footnotes within this document are unaudited, we believe all adjustments (consisting only of normal recurring adjustments) considered necessary for fair presentation have been included. In preparing our financial statements in conformity with accounting principles generally accepted in the United States of America, we must use estimates and assumptions that affect the amounts reported in our Condensed Consolidated Financial Statements and accompanying notes. We regularly evaluate the accounting policies and estimates we use. In general, we base the estimates on historical experience and on assumptions that we believe to be reasonable, given the particular circumstances in which we operate. Actual results may vary from those estimates.

Operating results for the three and nine months ended September 30, 2005 are not necessarily indicative of the results that may be expected for the full fiscal year 2005. Reasons for this include, but are not limited to: overall revenue and cost trends, particularly trends in patient accounts receivable collectibility and associated provisions for doubtful accounts; the timing and magnitude of price changes; fluctuations in contractual allowances, including the impact of the discounting components of our Compact with Uninsured Patients (“Compact”); changes in Medicare regulations; Medicaid funding levels set by the states in which we operate; levels of malpractice expense and settlement trends; impairment of long-lived assets and goodwill; restructuring charges; losses and costs related to natural disasters; litigation and investigation costs; acquisitions and dispositions of facilities and other assets; income tax rates and valuation allowances; the timing and amounts of stock option and restricted stock unit grants to employees, directors and others; and changes in occupancy levels and patient volumes. Factors that affect patient volumes and, thereby, our results of operations at our hospitals and related health care facilities include, but are not limited to: (1) unemployment levels; (2) the business environment of local communities; (3) the number of uninsured and underinsured individuals in local communities treated at our hospitals; (4) seasonal cycles of illness; (5) climate and weather conditions; (6) physician recruitment, retention and attrition; (7) local health care competitors; (8) managed care contract negotiations or terminations; (9) unfavorable publicity, which impacts relationships with physicians and patients; and (10) factors relating to the timing of elective procedures.  These considerations apply to year-to-year comparisons as well.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 2  ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS

During the second quarter of 2004, we modified our process for estimating and writing down self-pay accounts, which include co-payments and deductibles to be made by patients, to their net realizable value.  This change in how we estimate the net realizable value of self-pay accounts, as more fully described in the Annual Report, resulted in a pretax charge of $196 million ($0.26 per share after-tax), which was primarily attributable to the continued increase in numbers of uninsured and underinsured patients.

Also in the second quarter of 2004, we began the implementation of our Compact.  Our Compact is designed to offer managed care-style discounts to most uninsured patients, which enables us to offer lower rates to those patients who historically have been charged standard gross charges. A significant portion of those accounts had previously been written down as provision for doubtful accounts. Under the Compact, the discount offered to uninsured patients is recognized as a contractual allowance, which reduces net operating revenues at the time the self-pay accounts are recorded, and should reduce our provision for doubtful accounts in the future.  In June 2005, the Texas Governor signed Senate Bill 500, which allows hospitals to discount the services they provide to self-pay patients. We implemented the discounting components of the Compact at our hospitals in Texas effective September 1, 2005.  The discounts for uninsured patients were in effect at all 69 of our continuing operations hospitals by September 30, 2005.

During the three and nine months ended September 30, 2005, there were approximately $203 million and $504 million, respectively, of discounts recorded as contractual allowances on self-pay accounts under the Compact compared to $108 million and $136 million, respectively, during the three and nine months ended September 30, 2004. Prior to implementation of the discounting provisions under the Compact, the vast majority of these accounts were ultimately recognized to be uncollectible and, as a result, were then recorded in our provision for doubtful accounts.

We also provide charity care to patients who are financially unable to pay for the health care services they receive. Most patients who qualify for charity care are charged a per diem amount for services received, subject to a cap.  Except for the per diem amounts, our policy is not to pursue collection of amounts determined to qualify as charity care; and, therefore, we do not report these amounts in net operating revenues or in provision for doubtful accounts. For the nine months ended September 30, 2005, $458 million in charity care gross charges were excluded from net operating revenues and provision for doubtful accounts compared to $426 million for the nine months ended September 30, 2004.

As of September 30, 2005, our total estimated collection rates on managed care accounts and self-pay accounts were approximately 93% and 23%, respectively, which included collections from point-of-service through collections by our in-house collection agency or external collection agencies or vendors.  Our self-pay collection rate includes payments made by patients, including co-payments and deductibles paid by patients with insurance, prior to an account being classified and assigned to our in-house self-pay collection group.  The comparable managed care and self-pay collection rates as of December 31, 2004 were approximately 95% and 22%, respectively.

Accounts that are pursued for collection through regional or hospital-based business offices are maintained on our hospitals’ books and reflected in patient accounts receivable with an allowance for doubtful accounts established based on their estimated net realizable value (see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Estimates” in our Annual Report).

Accounts assigned to a collection agency are written off and excluded from patient accounts receivable and allowance for doubtful accounts; however, an estimate of future recoveries from all accounts in collection is determined based on historical experience and recorded as a component of accounts receivable in the Condensed Consolidated Balance Sheets.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The principal components of accounts receivable are shown in the table below:

NOTE 3  DISCONTINUED OPERATIONS

In January 2004, we announced a major restructuring of our operations involving the proposed divestiture of 27 general hospitals (19 in California and eight others in Louisiana, Massachusetts, Missouri and Texas). By focusing our financial and management resources on our remaining 69 general hospitals, including two recently constructed in Texas and Tennessee, we expect to create a stronger company with greater potential for long-term growth. As of September 30, 2005, we had completed the divestiture of 23 of the 27 facilities. In October 2005, we entered into a definitive agreement for the sale of our Community Hospital and Mission Hospital, both in Huntington Park, California, for estimated net after-tax proceeds of $3 million, which includes the liquidation of working capital.  Discussions and negotiations with potential buyers for the remaining two hospitals slated for divestiture are ongoing.

In connection with our divestiture actions, as further described in the Annual Report, we have classified the results of operations of the following hospitals as discontinued operations for all periods presented in the accompanying Condensed Consolidated Statements of Operations in accordance with Statement of Financial Accounting Standards (“SFAS”) No. 144, “Accounting for the Impairment or Disposal of Long-Lived Assets”:

•                 The 14 general hospitals whose intended divestiture we announced in March 2003, all of which were sold or closed prior to March 31, 2004,

•                 The 27 general hospitals whose intended divestiture we announced in January 2004, including Doctors Medical Center—San Pablo, in San Pablo, California, a leased hospital, which was classified in discontinued operations when its lease expired in July 2004,

•                 Our general hospital in Barcelona, Spain, which we sold in May 2004,

•                 Redding Medical Center, in Redding, California, of which we sold certain hospital assets in July 2004,

•                 Century City Hospital in Los Angeles, California, a previously leased hospital that we no longer operated by the end of April 2004,

•                 Medical College of Pennsylvania Hospital, in Philadelphia, Pennsylvania, which we sold in September 2004,

•                 NorthShore Psychiatric Hospital, in Slidell, Louisiana, which was closed in September 2004, and

•                 Suburban Medical Center, in Paramount, California, a previously leased hospital that we no longer operated by the end of October 2004.

We have classified $22 million and $101 million of assets of the hospitals included in discontinued operations as “held for sale” in current assets in the accompanying Condensed Consolidated Balance Sheets at September 30, 2005 and December 31, 2004, respectively. These assets consist primarily of property and equipment, including the associated deferred tax assets, net of valuation allowance, and are recorded at the lower of the asset’s carrying amount or its fair value less costs to sell. The fair value estimates were derived from independent appraisals, established market values of comparable assets, or internal calculations of estimated future net cash flows. Because we do not intend to sell the accounts receivable of the asset group, these receivables, less the related allowance for doubtful accounts and net cost report settlements payable and

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

valuation allowances, are included in our consolidated net accounts receivable in the accompanying Condensed Consolidated Balance Sheets. At September 30, 2005 and December 31, 2004, the accounts receivable, net of allowance for doubtful accounts and cost report settlements payable and valuation allowances, for these hospitals was $25 million and $203 million, respectively.

We recorded $35 million of impairment and restructuring charges in discontinued operations during the nine months ended September 30, 2005 consisting primarily of $28 million for the write-down of long-lived assets to their estimated fair values, less estimated costs to sell, $10 million in employee severance, retention and other costs, and a $3 million reduction in reserves recorded in prior periods.

We recorded $415 million of impairment and restructuring charges in discontinued operations during the nine months ended September 30, 2004 consisting primarily of $308 million for the write-down of long-lived assets to their net estimated fair values, less estimated costs to sell, $33 million for the write-down of goodwill, $26 million in employee severance, retention and other costs, and $48 million in costs related to an academic affiliation agreement with Drexel University College of Medicine in Pennsylvania. In connection with our divestiture of Medical College of Pennsylvania Hospital on September 1, 2004, we are contractually responsible for certain university costs through December 2005.

Net operating revenues and loss before taxes reported in discontinued operations for the three and nine months ended September 30, 2005 and 2004 are as follows:

As we move forward with our previously announced divestiture plans, we may incur additional asset impairment and restructuring charges in future periods.

NOTE 4  IMPAIRMENT AND RESTRUCTURING CHARGES

During the nine months ended September 30, 2005, we recorded impairment and restructuring charges of $210 million consisting of $206 million for the write-down of long-lived assets, primarily damaged assets of our Gulf Coast operations affected by Hurricane Katrina, net of $10 million of insurance proceeds received from our insurance carriers (see Note 14), $11 million in employee severance, benefits and relocation costs, $3 million of lease termination costs and $4 million in non-cash stock option modification costs related to terminated employees, offset by a $14 million reduction of reserves, primarily related to restructuring charges recorded in prior periods. During the nine months ended September 30, 2004, we recorded restructuring charges of $35 million consisting of $19 million in employee severance, benefits and related costs, $8 million in non-cash stock option modification costs related to terminated employees and $8 million in contract termination and consulting costs.

Based on future financial trends and the possible impact of negative trends on our future outlook, further impairments of long-lived assets and goodwill may occur, and we will incur additional restructuring charges.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The table below is a reconciliation of beginning and ending liability balances in connection with restructuring charges recorded during the nine months ended September 30, 2005 in continuing and discontinued operations:

The above liability balances are included in other current liabilities and other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets. Other items primarily include restructuring charges or reductions of reserves that are recorded in accounts other than these liabilities, such as the charges associated with stock option modifications. Cash payments to be applied against these accruals at September 30, 2005 are expected to be approximately $13 million in 2005 and $56 million thereafter.

NOTE 5  LONG-TERM DEBT AND LEASE OBLIGATIONS

The table below shows our long-term debt as of September 30, 2005 and December 31, 2004:

(1)             Includes $1 million and $5 million at September 30, 2005 and December 31, 2004, respectively, related to the general hospitals held for sale (see Note 3).

CREDIT AGREEMENTS

On December 31, 2004, we terminated our five-year revolving credit agreement and replaced it with a one-year letter of credit facility. The new facility provides for the issuance of up to $250 million in letters of credit and does not provide for any cash borrowings. The principal purpose of the new facility was to provide for the continuance of $216 million in letters of credit outstanding under the terminated revolving credit agreement at that time. The new facility was initially collateralized by

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

the stock of certain of our subsidiaries and cash equal to 105% of the facility amount (approximately $263 million reflected as restricted cash on the Condensed Consolidated Balance Sheets).  In March 2005, the facility was amended to provide for the release of the liens on the stock of our subsidiaries, and on April 19, 2005, the stock certificates were returned to us.  All liens were subsequently terminated.  In accordance with the amendment, the termination date of the letter of credit facility was extended from December 31, 2005 to June 30, 2006. The letter of credit facility was further amended in August 2005 to extend the termination date to June 30, 2008.  The letter of credit facility contains customary affirmative and negative covenants that, among other requirements, limit (1) liens, (2) consolidations, mergers or the sale of all or substantially all assets unless no event of default exists, (3) subsidiary debt and (4) prepayment of debt. At September 30, 2005, outstanding letters of credit under the agreement totaled $196 million.

SENIOR NOTES AND SENIOR SUBORDINATED NOTES

In January 2005, we sold $800 million of senior notes with registration rights in a private placement. The senior notes bear interest at a rate of 9¼% per year and mature on February 1, 2015. The senior notes are redeemable, in whole or in part, at any time, at our option at the greater of par or a redemption price based on a spread over comparable securities. The senior notes are general unsecured senior obligations and rank equally in right of payment with all of our other unsecured senior indebtedness, but are effectively subordinated to any obligations under our letter of credit facility. On April 8, 2005, we filed with the SEC a Form S-4 registration statement to register the $800 million principal amount of 9¼% Senior Notes due 2015 to be issued and offered in exchange for the unregistered senior notes sold in January 2005.  The registration statement has not yet been declared effective.  The terms of the senior notes to be registered on the Form S-4 filed with the SEC are substantially similar to the terms of the unregistered senior notes we sold in January 2005.  The covenants governing the new issue are identical to the covenants for our other senior notes. The net proceeds from the sale of the senior notes were approximately $773 million after deducting discounts and related expenses. We used a portion of the proceeds in February 2005 for the early redemption of our remaining outstanding senior notes due in 2006 and 2007 of $400 million, resulting in a $15 million loss from early extinguishment of debt, and the balance of the proceeds for general corporate purposes.

COVENANTS

Our letter of credit facility or the indentures governing our senior notes contain affirmative, negative and financial covenants that have, among other requirements, limitations on (1) liens, (2) consolidations, merger or the sale of all or substantially all assets unless no event of default exists and (3) subsidiary debt.

As discussed in Note 10, the ultimate resolution of claims and lawsuits brought against us, individually or in the aggregate, could have a material adverse effect on our business, financial position, results of operations or liquidity, including the inability to make scheduled debt payments when they become due.

NOTE 6  STOCK BENEFIT PLANS

At September 30, 2005, there were approximately 35 million shares of common stock available under the 2001 Stock Incentive Plan for future stock option grants and other incentive awards, including restricted stock units. Options generally have an exercise price equal to the fair market value of the shares on the date of grant and generally expire 10 years from the date of grant. A restricted stock unit is a contractual right to receive one share of our common stock in the future. Restricted stock units cannot exceed 10% of the total grants under the plan.

At the annual meeting of shareholders on May 26, 2005, our shareholders approved a one-time exchange of certain outstanding employee stock options for a lesser number of restricted stock units to be issued on July 1, 2005.  The exchange was offered only to certain current employees.  Our outside directors, four most senior executives and all former employees were not eligible to participate. Approximately 9 million vested and unvested options were exchanged on July 1, 2005 for approximately 2 million restricted stock units.  These exchanges will result in incremental non-cash compensation expense of approximately $17 million, together with approximately $6 million of future non-cash compensation expense for the unvested eligible options exchanged, which will both be recognized as compensation expense over the three-year vesting period of the restricted stock units.  As of September 30, 2005, there were approximately 5.4 million unvested restricted stock units outstanding.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes information about our outstanding stock options at September 30, 2005:

NOTE 7 SHAREHOLDERS’ EQUITY

The following table shows the changes in consolidated shareholders’ equity during the nine months ended September 30, 2005 (dollars in millions, shares in thousands):

NOTE 8 OTHER COMPREHENSIVE INCOME (LOSS)

The table below shows the tax effect allocated to each component of other comprehensive income (loss) for the three months ended September 30, 2005 and 2004 and nine months ended September 30, 2005 and 2004:

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

NOTE 9  PROFESSIONAL AND GENERAL LIABILITY INSURANCE

Effective June 1, 2002, our hospitals’ self-insured retention per occurrence was increased to $2 million. In addition, a new wholly owned insurance subsidiary, The Healthcare Insurance Corporation (“THINC”), was formed to insure substantially all of our professional and general liability risks in excess of our hospitals’ $2 million self-insured retention. This subsidiary insures these risks under a claims-made policy with retentions per occurrence for the periods June 1, 2002 through May 31, 2003, and June 1, 2003 through May 31, 2004, of $3 million and $13 million, respectively. Risks in excess of these combined retentions of $5 million and $15 million, respectively, are reinsured with major independent insurance companies. For the policy period June 1, 2004 through May 31, 2005, THINC retains 17.5% of the first $10 million layer for reinsurance claims in excess of the $15 million combined retention, resulting in a maximum retention per occurrence of $14.75 million by THINC. For the policy period June 1, 2005 through May 31, 2006, THINC retains 2.5% of the first $10 million layer for reinsurance claims in excess of the $15 million combined retention, resulting in a maximum retention per occurrence of $13.25 million by THINC.

Through May 31, 2002, we insured substantially all of our professional and general liability risks in excess of self-insured retentions through Hospital Underwriting Group (“HUG”), our wholly owned insurance subsidiary, under a mature claims-made policy with a 10-year extended reporting period. Our hospitals’ self-insured retentions were $1 million per occurrence for fiscal years ended May 31, 1996 through May 31, 2002. HUG’s retentions covered the next $2 million per occurrence. Claims in excess of the $3 million combined retention per occurrence were, in turn, reinsured with major independent insurance companies. In earlier policy periods, the self-insured retentions varied by hospital and by policy period from $500,000 to $5 million per occurrence.

For the periods June 1, 2000 through May 31, 2001, and June 1, 2001 through May 31, 2002, the policies written by HUG provided a maximum of $50 million of coverage for each policy period. As of September 30, 2005, HUG’s retained reserves for losses during the policy period ended May 31, 2001 were substantially close to reaching $50 million, and for the policy period ended May 31, 2002, the retained reserves for losses and the amounts paid, plus amounts committed to settlements, had reached the $50 million limit. However, the $50 million coverage limit each year is based on paid claims and the payments for each year have not yet reached the limits; therefore, the policies are not yet exhausted. If the $50 million maximum amount is exhausted in either of these periods, we will be responsible for the first $25 million per occurrence for any subsequent claim paid that was applicable to the exhausted policy period before any excess professional and general liability insurance coverage provided by major independent insurance companies would apply. Based on an actuarial review, we have provided for estimated losses that exceed our self-insured retention that will not be covered by the HUG policies.

As of September 30, 2005, we had purchased claims-made excess professional and general liability insurance policies from major independent insurance companies with a total aggregate limit of $275 million, which policies provide coverage if a claim exceeds $25 million. All reinsurance applicable to HUG or THINC and any excess professional and general liability insurance we purchase are subject to policy aggregate limitations. We have sought recovery under our excess professional and general liability insurance policies for up to $275 million of our $395 million settlement, in December 2004, of the patient litigation related to Redding Medical Center, but our insurance carriers have raised objections to coverage under our policies. We are pursuing all means available against the insurance carriers in seeking coverage, including, where permitted, filing arbitration demands. Our excess professional and general liability insurance policies are single aggregate policies with each carrier. Any limits paid, in whole or in part, could deplete or reduce the excess limits available to pay any

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

other claims applicable to this policy period.  If such policy aggregate limitations should be partially or fully exhausted in the future, our financial position, results of operations or cash flows could be materially adversely affected.

In addition to the reserves recorded by the above insurance subsidiaries, we maintain self-insured retention reserves based on actuarial estimates for the portion of our professional and general liability risks, including incurred but not reported claims, for which we do not have insurance coverage (i.e., self-insured retentions). Reserves for losses and related expenses are estimated using expected loss-reporting patterns and are discounted to their present value under a risk-free rate approach using a Federal Reserve seven-year maturity composite rate of 4.0% at September 30, 2005 and 3.8% at September 30, 2004 based on our estimated claims payout period. If actual payments of claims materially exceed projected estimates of claims, our financial position, results of operations or cash flows could be materially adversely affected. Also, we provide letters of credit to our insurers as security under a selected number of programs to collateralize the deductible and self-insured retentions under our professional and general liability insurance programs, which can be drawn upon under certain circumstances. At September 30, 2005, the current and long-term professional and general liability reserves on our Condensed Consolidated Balance Sheet were approximately $738 million.

Included in other operating expenses in the accompanying Condensed Consolidated Statements of Operations is malpractice expense of $60 million and $178 million for the three and nine months ended September 30, 2005 and $55 million and $217 million for the three and nine months ended September 30, 2004, respectively.

NOTE 10  CLAIMS AND LAWSUITS

During the past several years, we have been subject to a significant number of claims and lawsuits. Some of these matters have recently been resolved, as described below and in our Annual Report. During the past several years, we also became the subject of federal and state agencies’ civil and criminal investigations and enforcement efforts, and received subpoenas and other requests from those agencies for information relating to a variety of subjects. While we cannot predict the likelihood of future claims or inquiries, we expect that new matters may be initiated against us from time to time.

The results of claims, lawsuits and investigations cannot be predicted, and it is possible that the ultimate resolution of these matters, individually or in the aggregate, may have a material adverse effect on our business (both in the near and long term), financial position, results of operations or cash flows. Although we defend ourselves vigorously against claims and lawsuits and cooperate with investigations, these matters (1) could require us to pay substantial damages or amounts in judgments or settlements, which individually or in the aggregate could exceed amounts, if any, that may be recovered under our insurance policies where coverage applies and is available, (2) cause us to incur substantial expenses, (3) require significant time and attention from our management, and (4) could cause us to close or sell hospitals or otherwise modify the way we conduct business.

Where specific amounts are sought in any pending legal proceeding, those amounts are disclosed. For all other matters, where the possible loss or range of loss is reasonably estimable, an estimate is provided. Where no estimate is provided, the possible amount of loss is not reasonably estimable at this time. We presently cannot determine the ultimate resolution of all investigations and lawsuits.

Currently pending legal proceedings and investigations that are not in the ordinary course of business are principally related to the subject matters set forth below:

1.                                       Physician Relationships—We and certain of our subsidiaries are under heightened scrutiny with respect to our hospitals’ relationships with physicians. We believe that all aspects of our relationships with physicians are potentially under review. Proceedings in this area may be criminal, civil or both. After a federal grand jury indictment, Alvarado Hospital Medical Center, Inc. and Tenet HealthSystem Hospitals, Inc. (both Tenet subsidiaries) were put on trial in San Diego, California for allegedly illegal use of physician relocation, recruitment and consulting agreements. The trial judge declared a mistrial in the case after the members of the jury indicated that they were unable to reach a verdict, and he subsequently scheduled a second trial, which commenced on May 3, 2005 and is ongoing. Relocation agreements with physicians also are the subject of a criminal investigation by the U.S. Attorney’s Office for the Central District of California, which served us and several of our subsidiaries with administrative subpoenas seeking documents related to physician relocation agreements at certain Southern California hospitals currently or formerly owned by our subsidiaries, as well as summary information about physician relocation agreements related to all of our hospital subsidiaries. In addition, physician relationships and other matters at several hospitals in Southern California, Northern California,

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

El Paso, Texas, New Orleans, Louisiana, St. Louis, Missouri and Memphis, Tennessee are the subject of ongoing federal investigations. Also, in June 2003, the Florida Medicaid Fraud Control Unit issued an investigative subpoena to us seeking the production of employee personnel records and contracts with physicians, physician assistants, therapists and management companies from the Florida hospitals currently or formerly owned by our subsidiaries. Since that time, we have received additional requests for information from that unit.

2.                                       Pricing—We and certain of our subsidiaries are currently subject to government investigations and civil lawsuits arising out of pricing strategies at facilities owned or formerly owned by our subsidiaries. In that regard, federal government agencies are investigating whether outlier payments made to certain hospitals owned or formerly owned by our subsidiaries were paid in accordance with Medicare laws and regulations, and whether we omitted material facts concerning our outlier revenue from our public filings. Also, we have been named as a defendant in two civil cases in federal district court in Miami, one filed by the Florida Attorney General and 13 Florida county hospital districts, health care systems and non-profit corporations and a second filed as a purported class action by Boca Raton Community Hospital, principally alleging that Tenet’s past pricing policies and receipt of Medicare outlier payments violated federal and state Racketeer Influenced and Corrupt Organizations (RICO) Acts, causing harm to the plaintiffs.

In addition, plaintiffs in California, Tennessee, Louisiana, Florida, South Carolina, Pennsylvania, Texas, Missouri and Alabama have brought class action lawsuits against us and certain of our subsidiaries in courts in those states alleging that they paid unlawful or unfair prices for prescription drugs or medical products or procedures at hospitals or other medical facilities currently or formerly operated by our subsidiaries. In connection with the California action, on August 8, 2005, we received final court approval of a settlement that is nationwide in effect. As part of the settlement, we have made no admission of wrongdoing and we continue to vigorously deny the allegations made by plaintiffs in these actions. The settlement has two primary components: (1) injunctive relief governing our conduct prospectively for a period of four years, and (2) retrospective relief, including restitution and discounting of outstanding unpaid bills, for covered patients who were treated at our hospitals during the settlement class period (June 15, 1999 to December 31, 2004). We have also agreed to make a $4 million charitable contribution to a health-care-related charity specified by plaintiffs’ counsel. A notice of appeal of the judgment approving the settlement has been filed in the California Court of Appeal by one of the objectors to the settlement. The settlement will become effective upon the resolution of this appeal and the expiration of the period to make any further appeals. If the nationwide settlement becomes effective, we expect the similar actions in the other states to be dismissed to the extent that the claims in those cases fall within the scope of the release provided in the settlement.  At September 30, 2005, we had an accrual of $30 million, recorded in prior periods, as a minimum liability to address the potential resolution of these cases.

3.                                       Securities and Shareholder Matters—A consolidated class action lawsuit is pending in federal court in Los Angeles, California against Tenet, certain of our former officers and our independent registered public accounting firm alleging violations of the federal securities laws. In addition, a number of shareholder derivative actions have been filed against certain current and former members of our board of directors and former members of senior management by shareholders. These actions purport to allege various causes of action on behalf of Tenet and for our benefit, including breach of fiduciary duty, insider trading and other causes of action. The shareholder derivative actions are pending in federal court in Los Angeles, and in state court in Santa Barbara, California. At September 30, 2005, we had an accrual of $45 million, recorded in the quarter ended June 30, 2005, as an estimated minimum liability to address the potential resolution of the consolidated securities class action lawsuit and the shareholder derivative actions.  This accrual has been offset by a corresponding amount that is expected to be recovered from our insurance carriers under our insurance policies.

In addition, the SEC is conducting a formal investigation of whether the disclosures in our financial reports relating to Medicare outlier reimbursements and stop-loss payments under managed care contracts were misleading or otherwise inadequate, and whether there was any improper trading in our securities by certain of our current and former directors and officers. The SEC served a series of document requests and subpoenas for testimony on the Company, certain of our current and former employees, officers and directors, and our independent registered public accounting firm. On April 27, 2005, we announced that we had received a “Wells Notice” from the staff of the SEC in connection with this investigation, and that we had been informed that Wells Notices had also been issued to certain former senior executives of the Company who left their positions in 2002 and 2003. A Wells Notice indicates that the SEC’s staff intends to recommend that the agency bring a civil enforcement action against the recipients for possible violations

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of federal securities laws. Recipients of Wells Notices have the opportunity to respond before the SEC’s staff makes its formal recommendation on whether any action should be brought. We submitted a response on May 13, 2005.

As previously disclosed, the SEC is also investigating allegations made by a former employee that inappropriate contractual allowances for managed care contracts may have been established at three California hospitals through at least fiscal year 2001. At the request of the audit committee of our board of directors, the board’s independent outside counsel, Debevoise & Plimpton LLP (“Debevoise”), conducted an investigation of these allegations utilizing the forensic accounting services of Huron Consulting Group (“Huron”). This investigation was expanded and included determining whether similar issues might have affected other Tenet hospitals during the periods mentioned in the allegations and any other pertinent periods. Debevoise and Huron have completed their investigation and presented the results of their findings to the audit committee.Based on these findings, the audit committee determined that it would be necessary to restate our previously reported financial statements as described in Note 15.  We are continuing to cooperate with the SEC with respect to its investigation, including responding to subsequent requests for voluntary production of documents, as well as a subpoena request for documents dated October 6, 2005, and have provided regular updates to the SEC as to the progress of the investigation.

4.                                       Redding Medical Center, Inc.—We are subject to a qui tam action brought under California Insurance Code Section 1871.7 et seq., which allows “interested persons” to file sealed complaints for allegedly fraudulent billings to private insurers. The action was unsealed in October 2004 and, subsequently, was served on the defendants. Both the California Department of Insurance and the District Attorney of Shasta County, California have declined to intervene in this action. Plaintiff’s second amended complaint, which was filed on May 18, 2005, generally alleges that false claims for payments were made to private insurers for allegedly medically unnecessary procedures performed at Redding Medical Center (of which we sold certain hospital assets in July 2004), and also includes a cause of action for “aiding and conspiring.” We have denied all material allegations and set forth numerous affirmative defenses. On September 21, 2005, the court ordered a bifurcated trial in this matter. A bench trial on two issues of law in the case is set to begin on December 13, 2005. Discovery on all other issues has been stayed.

5.                                       Medicare Coding—The Medicare coding practices at hospitals owned or formerly owned by our subsidiaries are also under increased scrutiny. The federal government in January 2003 filed a civil lawsuit against us and certain of our subsidiaries relating to hospital billings to Medicare for inpatient stays reimbursed pursuant to four particular diagnosis-related groups. The government in this lawsuit has alleged violations of the False Claims Act and various common law claims. Discovery has commenced, and trials relating to the original complaint and two additional related complaints are set to begin March 6, 2007. At September 30, 2005, we had an accrual of $34 million, recorded in prior years, for this matter.

In addition, we are cooperating with an investigation by the U.S. Attorney’s Office for the Central District of California into coding, billing and cost reporting relating to the Comprehensive Cancer Center at our Desert Regional Medical Center.

6.                                       Other Matters

(a)          On October 27, 2003, David L. Dennis, our former chief financial officer and chief corporate officer, filed a demand for arbitration alleging that he is entitled to payments under a severance benefit plan that our board of directors adopted in January 2003. We contend that the severance benefit plan does not apply to Mr. Dennis, who resigned in November 2002. The arbitration is scheduled to commence on December 13, 2005.

(b)         On June 24, 2005, Thomas B. Mackey, our former chief operating officer, filed a demand for arbitration with the American Arbitration Association alleging that he is entitled to a lump sum payment under Tenet’s Supplemental Executive Retirement Plan (SERP). The arbitration demand was brought against Tenet Healthcare Corporation Pension Administration Committee, Tenet Healthcare Corporation Supplemental Executive Retirement Plan, and Tenet Healthcare Corporation. We contend that the Pension Administration Committee properly denied Mr. Mackey’s claim for a lump sum payment. Mr. Mackey is seeking approximately $7.8 million, less monthly payments made to date under the SERP, and attorneys’ fees. The arbitration is in its early stages.

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(c)          On September 28, 2004, the court granted our petition to coordinate two pending wage and hour lawsuits in Los Angeles Superior Court in California. We will now be defending in a single court this proposed class action lawsuit alleging that our hospitals violated certain provisions of the California Labor Code and applicable California Industrial Welfare Commission Wage Orders with respect to meal breaks, rest periods and the payment of compensation for overtime and meal breaks and rest periods not taken. Plaintiffs seek to certify this action on behalf of virtually all nonexempt employees of our California subsidiaries. We contend that certification of a class in the action is not appropriate because our uniform policies comply with the applicable Labor Code and Wage Orders. In addition, we contend that each of these claims must be addressed individually based on its particular facts and, therefore, should not be subject to class certification.

(d)         We are cooperating with an investigation by the U.S. Attorney’s Office in New Orleans, Louisiana of Peoples Health Network (“PHN”), an unconsolidated New Orleans health plan management services provider in which one of our subsidiaries holds a 50% membership interest, and Memorial Medical Center, a New Orleans hospital owned by one of our subsidiaries. Subpoenas issued to PHN in 2003 seek various PHN-related corporate records, as well as information on patients who were admitted to a rehabilitation unit and members for whom inpatient rehabilitation services were ordered, recommended or requested, and subsequently denied. The subpoenas also seek documents related to payments to and contractual matters concerning physicians and others, third-party reviews of denials of services and certain medical staff committees and other medical staff entities. A subpoena issued to PHN in September 2004 seeks various documents, including medical policies and practice guidelines, and an additional subpoena issued to PHN in April 2005 seeks documents related to PHN’s appeal and grievance policies and member disenrollment, as well as information on PHN members who were admitted to a long-term acute care facility. We continue to provide certain information as requested by the government.

(e)          We were notified in mid-2004 that subpoenas had been issued to the buyer of two of our former hospitals, Twin Rivers Regional Medical Center in Missouri and John W. Harton Regional Medical Center in Tennessee. We retained certain liabilities in connection with the sale of these hospitals in November 2003. The Twin Rivers subpoena seeks documents for the period from 1999 through 2003 pertaining to a number of cardiac care patients. The Harton subpoena seeks a variety of documents, primarily financial, for the period from June 2000 through 2003. In addition, we are cooperating with voluntary requests from the U.S. Attorney’s Office in St. Louis, Missouri seeking, among other things, documents regarding physician relocation agreements at four St. Louis area hospitals—two of which we no longer own—as well as Twin Rivers. The voluntary requests also seek additional information regarding certain admissions and medical procedures at Twin Rivers.

(f)            We are one of 20 large health care systems in the United States that has received requests for documents and information as part of an investigation by the U.S. House of Representatives Committee on Energy and Commerce into hospital billing practices and their impact on the uninsured. We received the most recent request on April 25, 2005, and have provided the Committee with written responses. We continue to cooperate with this investigation.

(g)         In May 2003, the Internal Revenue Service completed an examination of our federal income tax returns for fiscal years ended May 31, 1995, 1996 and 1997 and issued a Revenue Agent’s Report in which it proposed to assess an aggregate tax deficiency for the three-year audit period of $157 million. In the second quarter of 2005, we recorded an adjustment of $26 million ($23 million in continuing operations and $3 million in discontinued operations) to reduce our estimated liability for audit contingencies as a result of the resolution of several disputed issues.  Among these issues was a disputed adjustment with respect to the timing of the recognition of income for tax purposes pertaining to Medicare and Medicaid net revenues, which we resolved by agreeing to spread the impact of the disputed adjustment over fiscal years ended May 31, 1995 through May 31, 2002. As a result of resolving these disputed issues, our tax liability for fiscal years May 31, 1995, 1996 and 1997 has been reduced to approximately $90 million, approximately $23 million of which is attributable to the issues that are no longer in dispute and approximately $67 million of which is still in dispute.

After the settlement, the tax liability that remains in dispute for fiscal years ended May 31, 1995, 1996 and 1997 is approximately $67 million plus interest of approximately $66 million through September 30, 2005, before any federal or state tax benefit.  The principal issues that remain in dispute include the deductibility of a portion of the civil settlement we paid to the federal government in 1994 related to our discontinued psychiatric hospital business and the computation of depreciation expense with respect to certain capital expenditures incurred during the

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foregoing fiscal years.  We expect to resolve the remaining disputed issues through formal litigation in Tax Court.  We presently cannot determine the ultimate resolution of the remaining disputed issues.

The Internal Revenue Service has commenced an examination of our tax returns for fiscal years ended May 31, 1998 through the seven-month transition period ended December 31, 2002. We presently cannot determine the ultimate resolution of this examination. We believe we have adequately provided for tax matters related to fiscal years ended May 31, 1998 through the seven-month transition period ended December 31, 2002, including the impact on these years of the partial settlement of the audit for fiscal years ended May 31, 1995, 1996 and 1997.

(h)         On March 24, 2005, the Florida Department of Children and Families (“DCF”) notified our Florida Medical Center hospital in Ft. Lauderdale that DCF had reinstated the hospital’s authority to receive patients under the Baker Act, a Florida state law that governs the involuntary admission of psychiatric patients to a hospital. On February 14, 2005, DCF had suspended the hospital’s authority to receive Baker Act patients. On March 1, 2005, we received a voluntary request for documents from the Florida Attorney General’s Medicaid Fraud Control Unit (“MFCU”) office in Ft. Lauderdale seeking medical records and billing information for certain Medicaid patients admitted to Florida Medical Center’s psychiatric unit from January 2004 through February 2005, as well as certain information concerning patients admitted to the hospital under the Baker Act. We are cooperating with the Florida MFCU in connection with its review.

(i)             On October 1, 2005, representatives of the Louisiana Attorney General’s Office conducted a search of the campus of Memorial Medical Center in New Orleans, Louisiana. Included on Memorial’s campus is a 317-bed Tenet hospital that has been closed since September 2, 2005 because of damage from Hurricane Katrina. The Attorney General’s Office removed certain records and other materials, most of which came from an independently owned long-term acute care facility on Memorial’s campus, which is managed and operated under separate license by LifeCare Holdings Inc., which is not affiliated with us. The Attorney General’s Office conducted its search in connection with a search warrant issued by an Orleans Parish state judge on September 30, 2005. We were informed by representatives of the Attorney General’s Office that this was one of several searches the Attorney General intends to make of hospitals and nursing homes where deaths occurred during and after Hurricane Katrina. The Attorney General has publicly stated that he is investigating all deaths that occurred at all nursing homes and hospitals immediately following the hurricane. On October 24, 2005, the Attorney General’s Office issued a subpoena to Tenet and Memorial Medical Center requesting documents pertaining to the matters under investigation and events occurring at the hospital during and after the hurricane. The Attorney General’s Office has also subpoenaed certain individuals it wishes to question on these matters, including a number of Tenet employees. We are cooperating with the Attorney General’s Office with respect to this investigation.

(j)             On September 27, 2005, a political subdivision of Jefferson Parish, Louisiana attempted to initiate an expropriation action against our Meadowcrest Hospital by making an unsolicited written offer to purchase the hospital for $15.7 million. On October 7, 2005, Meadowcrest Hospital responded to the unsolicited offer and expropriation attempt by filing a civil action in the U.S. District Court for the Eastern District of Louisiana, seeking a declaratory judgment and injunctive relief prohibiting the expropriation on the grounds that it is anticompetitive in nature and, if allowed, would violate federal antitrust laws and both the United States and Louisiana state constitutions. On October 21, 2005, the defendant answered the complaint and counterclaimed for expropriation, claiming the need to acquire Meadowcrest Hospital in order to ensure that the future health care needs of the residents of Jefferson Parish are met. No trial date has yet been set for this matter.

(k)          We and our subsidiaries continue to be engaged in disputes with managed care plans. For the most part, we believe the issues raised in these contract interpretation and rate disputes are commonly encountered by other providers in the health care industry.

In addition to the matters described above, we are subject to claims and lawsuits in the ordinary course of business. The largest category of these relate to medical malpractice.

We record reserves for claims and lawsuits when they are probable and reasonably estimable. For matters where the likelihood or extent of a loss is not probable or cannot be reasonably estimated, we have not recognized in the accompanying

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Condensed Consolidated Financial Statements all potential liabilities that may result. If adversely determined, the outcome of some of these matters could have a material adverse effect on our business, liquidity, financial position or results of operations.

The table below presents reconciliations of the beginning and ending liability balances in connection with legal settlements and related costs recorded during the nine months ended September 30, 2005 and 2004: