UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934


                        TENET INFORMATION SERVICES, INC.
                        --------------------------------
                                (Name of Issuer)


                                  Common Stock
                         ------------------------------
                         (Title of Class of Securities)


                                  8800332 10 1
                                  ------------
                                 (CUSIP Number)


                       Marty Williams, Let's Go Aero, Inc.
         3380 North El Paso Street, Suite G, Colorado Springs, CO 80907
                                Tel. 719-630-3800
         --------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                  July 14, 2004
             -------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box. _____

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CUSIP No.  8800332 10 1
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1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only)

Marty Williams
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2. Check the Appropriate Box if a Member of a Group

(a) ___  (b) X

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3. SEC Use Only _______________________________
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4. Source of Funds    PF
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5. Check if Disclosure of Legal  Proceedings Is Required  Pursuant to Items 2(d)
or 2(e) _____
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6. Citizenship or Place of Organization USA
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Number of         7.  Sole Voting Power           193,371
Shares Bene-    ----------------------------------------------------------------
ficially          8.  Shared Voting Power       2,048,371
Owned by Each   ----------------------------------------------------------------
Reporting         9.  Sole Dispositive Power      193,371
Person With     ----------------------------------------------------------------
                  10. Share Dispositive Power   2,048,371
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11. Aggregate Amount Beneficially Owned by Each Reporting Person   2,241,742
--------------------------------------------------------------------------------

12. Check if the Aggregate Amount in Row (11) Excludes Certain Shares _____
--------------------------------------------------------------------------------

13. Percent of Class Represented by Amount in Row (11) 30.4%
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14. Type of Reporting Person   IN
--------------------------------------------------------------------------------

Item 1.  Security and Issuer:

Common Stock
Tenet Information Services, Inc.
3380 North El Paso Street, Suite G
Colorado Springs, Colorado 80907

Item 2.  Identity and Background:

(a) Name: Marty Williams

(b) Address:  Let's Go Aero, Inc., 3380 North El Paso Street,  Suite G, Colorado
Springs, CO 80907

(c) Occupation and employment:  Director, President, Chief Executive Officer and
Chairman of the Board, Let's Go Aero, Inc., 3380 North El Paso Street,  Suite G,
Colorado  Springs,  CO 80907,  a product  design and  engineering  company  that
develops  and  sells  novel  cargo  management  solutions  for  the  automotive,
recreational  vehicle and  recreation  industries.  Director,  President,  Chief
Executive Officer and Chairman of the Board, Tenet Information Services, Inc.

(d) Criminal Legal proceedings: None

(e) Civil Legal Proceedings: None

(f) Citizenship: USA



Item 3. Source and Amount of Funds or Other consideration.

On July 14, 2004, and effective as of June 30, 2004, Tenet Information Services,
Inc.  ("Tenet")  and Let's Go Aero Inc.,  Colorado  Springs,  Colorado,  ("LGA")
entered  into a  definitive  agreement  for  LGA's  shareholders  to  acquire  a
controlling interest in Tenet through a stock-for-stock  exchange.  All of LGA's
shareholders  will exchange all of their 2,640.93 shares of LGA common stock for
a total of  5,762,232  newly  issued  shares of Tenet's  $.001 par value  common
stock. The 14 former LGA shareholders  will then own in the aggregate 85% of the
issued and outstanding shares of Tenet.

Mr. Williams obtained his 1,855,000 shares of Tenet (in joint ownership with his
spouse)  through  exchange of his 850.18 shares of LGA (in joint  ownership with
his spouse) and obtained 386,742 options to acquire Tenet shares of common stock
through exchange of his options to acquire 180 shares of LGA common stock (90 of
which are owned by his spouse).

Item 4. Purpose of Transaction.

The purposes of the acquisition  were (1) for the former  shareholders of LGA to
acquire control of a public company that had no business  operations,  yet which
had some cash that could be used to fund operations of LGA, (2) to improve LGA's
ability to raise additional working capital, and (3) to provide an incentive for
holders of LGA  convertible  notes to convert the  approximate  $1.3  million in
principal  and interest due on such notes to common  stock.  Mr.  Williams was a
note holder (with his spouse) and received 127.18 shares of LGA as a consequence
of the conversion.

The former  Directors of Tenet  appointed  Marty  Williams and Sara  Williams as
Directors of Tenet pursuant to the terms of the Acquisition Agreement, Stock for
Stock.  Marty  Williams  was  appointed  by the new Tenet Board of  Directors as
President,  Chief Executive  Officer and Chairman of the Board of Tenet and Sara
Williams was appointed as Secretary,  Treasurer and Chief  Financial  Officer of
Tenet.  Under the terms of that same  agreement,  Jerald L.  Nelson  and Fred J.
Anderson  resigned  as  officers  and  Directors  of  Tenet.  Eric J.  Nickerson
continued his position as a Director of Tenet.

As a result of the  exchange  of shares,  Tenet now holds LGA as a wholly  owned
subsidiary.  Therefore, Tenet has effectively acquired all of the assets of LGA.
Tenet will also move its principal office and business  operations to 3380 North
El Paso Street, Suite G, Colorado Springs, Colorado 80907.

Prior to the  acquisition,  Tenet,  as a result of the sale of all its remaining
operations on October 22, 2003,  was a publicly  traded company with no business
operations,  but  with  approximately  $200,000  in cash and  receivables  after
subtraction  of  liabilities.   Tenet  had  1,016,860  shares  of  common  stock
outstanding  at  June  30,  2004,  just  prior  to  the  effective  date  of the
acquisition.

LGA was a privately held company and is a product design and engineering company
based  in  Colorado  Springs,  Colorado.  It  develops  and  sells  novel  cargo
management  solutions for the  automotive,  recreational  vehicle and recreation
industries.

Item 5. Interest in Securities of the Issuer

(a)    Name: Marty Williams Shares Beneficially Owned:  2,241,742  Percentage of
       Class: 30.4%

(b)    Shares  beneficially  owned includes options to acquire 386,742 shares of
       common stock (half owned by Mr.  Williams  directly and half owned by his
       spouse).  The options expire March 31, 2006. Mr. Williams has sole voting
       power and sole  dispositive  power with  respect  to  193,371  and shared
       voting  power and  shared  dispositive  power with  respect to  2,048,371
       shares listed in Item 5(a).



(c)    See Item 3, above.

(d)    Not applicable.

(e)    Not applicable.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to
        Securities of the Issuer.

Mr. Williams is not a party to any contracts,  arrangements,  understandings  or
relationships with any person with respect to any securities of Tenet other than
as a consequence of the fact that he among all the other shareholders of LGA has
tendered  his shares of LGA to Tenet for  exchange  pursuant to the terms of the
Acquisition  Agreement  described  above,  and that he executed the  Acquisition
Agreement as President of LGA.  Mr.  Williams  personally  is not a party to the
Acquisition  Agreement,  but has executed a Subscription Agreement between Tenet
and him with  respect to the  exchange  of his  shares of LGA.  The terms of the
Subscription   Agreement   with  Mr.   Williams  may  be  summarized  as  merely
representing  and  warranting  ownership  of the LGA  shares,  his  status as an
accredited  investor,  his  access  to  information  about  Tenet,  and  the  he
understands  that the shares of Tenet he will get in exchange will be restricted
securities. The only covenant in the Subscription Agreement is that Mr. Williams
will not sell his Tenet shares unless they are registered or the  transaction is
exempt from registration.

Item 7.  Materials to be filed as Exhibits.

Acquisition Agreement - Stock for Stock

Signature

After  reasonable  inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Date:  July 26, 2004

/s/ Marty Williams
------------------
Marty Williams


EXHIBITS

Acquisition Agreement - Stock for Stock