| AMERICAN DIPLOMATE INSURANCE COMPANY (L85690) | Director |
| D. O. CASEY CONTRACTOR, INC. (H56730) | STD |
| EAST HILLSBOROUGH PROPERTIES, INC. (K17980) | Director |
| KIDNEYCARE OF FLORIDA, INC. (652151) | Director |
| LAKELAND DIALYSIS AND TRANSPLANT FOUNDATION, INC. (730910) | TD |
| PINELLAS NEUROLOGY CENTER, INC. (H92302) | Director |
| MEDICAL OVERHEAD OPTIONS, INC. (H09633) | STD |
| MPM MARINE SALES, INC. (J95182) | Director |
| PCS CORPORATION OF TAMPA BAY (P04000117482) | Director |
| PCSV CORP. (P09000017953) | Director |
| PENGUIN OF TAMPA BAY, INC. (L27633) | Director |
| DOCTORS' HOSPITAL MANAGEMENT, INC. (K51915) | Director |
| MEDSERV ASSOCIATES, INC. (H61164) | Director |
| MEDSERV ASSOCIATES, MICHAEL J. PICKERING, M.D., P.A. (G59505) | DPS |
| MEDSERV ASSOCIATES, MICHAEL J. PICKERING, M.D., P.A. (G59505) | Treasurer |
| PROFESSIONAL CLINICAL LABORATORY, INC. (J21204) | Director |
| HAC OF TAMPA, INC. (M73776) | Director |
| INTER-MED SYSTEMS, INC. (636027) | Director |
| JESSE FOODS COMPANY (V36087) | Director |
| PC CORPORATION OF TAMPA (P04000117506) | Director |
| PINELLAS ORTHOPEDIC CENTER, INC. (H92307) | Director |
| SHIRES, PICKERING, DE QUESADA, RIFKIN & CAMPBELL, M.D.'S, P.A. (686416) | DP |
| THE BLUE CRAB, INC. (680487) | PST |
| THE BLUE CRAB, INC. (680487) | Director |
| HOME DIALYSIS ASSOCIATES, INC. (552319) | TD |
| KIDNEYCARE, INC. (739118) | Director |
| LABORATORY, INC. OF TAMPA (S84558) | Director |
| NEPHROLOGY, P.A. (P95000046109) | Director |
| PICKERING & CASTILLO, M.D.'S, P.A. (J18248) | Director |