0001193125-04-079203 10-Q 5 20040331 20040505 DAVITA INC 0000927066 8090 510354549 DE 1231 10-Q 34 001-14106 04781324 21250 HAWTHORNE BLVD STE 800 TORRANCE CA 90503-5517 3107922600 21250 HAWTHORNE BLVD SUITE 800 TORRANCE CA 90503-5517 TOTAL RENAL CARE HOLDINGS INC 19950524 TOTAL RENAL CARE INC 19940719 10-Q 1 d10q.htm FORM 10-Q EX-31.1 2 dex311.htm CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER EX-31.2 3 dex312.htm CERTIFICATION OF THE CHIEF FINANCIAL OFFICER EX-32.1 4 dex321.htm CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER EX-32.2 5 dex322.htm CERTIFICATION OF THE CHIEF FINANCIAL OFFICER