Warren Buffett scores a quick $230 million with DaVita deal By: CNBC.com News December 06, 2017 at 12:07 PM EST DaVita, the operator of kidney dialysis centers, is in a $4.9 billion deal to sell its clinics division to UnitedHealth Read More >> Related Stocks: Berkshire Hathaway DaVita HealthCare Partner Johnson & Johnson UnitedHealth Group