1 EXHIBIT 23 LIFEMARK CORPORATION CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-80345, No. 333-04981, No. 33-42905, No. 33-56826, No. 33-76720, No. 33-92042, and No. 333-27063) of Lifemark Corporation of our report dated July 24, 2000 appearing on page 22 of this Form 10-K. PricewaterhouseCoopers LLP Phoenix, Arizona August 18, 2000