1 Exhibit 23(a) CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated July 24, 2000 relating to the financial statements and the financial statement schedules of Lifemark Corporation, which appear in Lifemark Corporation's Annual Report on Form 10-K for the year ended May 31, 2000. PRICEWATERHOUSECOOPERS LLP Phoenix, Arizona September 11, 2000