0001181431-07-043550 4 2 20070630 20070703 20070703 DAVITA INC 0000927066 8090 510354549 DE 1231 601 HAWAII STREET EL SEGUNDO CA 90245 3105362400 601 HAWAII STREET EL SEGUNDO CA 90245 TOTAL RENAL CARE HOLDINGS INC 19950524 TOTAL RENAL CARE INC 19940719 VAUGHAN RICHARD C 0001228948 4 34 001-14106 07958177 LINCOLN NATIONAL CORP 1500 MARKET ST STE 3900 PHILADELPHIA PA 19102 4 1 rrd164776.xml RICHARD VAUGHAN'S FORM 4 EX-24. 2 rrd145710_164347.htm POWER OF ATTORNEY