EXHIBIT 21 SUBSIDIARIES Jurisdiction of Percentage Owned Subsidiaries Incorporation By Registrant DCA Medical Services, Inc. Florida 100% Dialysis Medical, Inc.* Florida 100% Dialysis Services of Florida, Inc.- Fort Walton Beach* Florida 100% Dialysis Services of NJ, Inc.- Manahawkin New Jersey 80% Dialysis Services of NJ, Inc. - Toms River* New Jersey 80% Dialysis Services of Pennsylvania, Inc.- Carlisle Pennsylvania 100% Dialysis Services of Pennsylvania, Inc.- Chambersburg Pennsylvania 100% Dialysis Services of Pennsylvania, Inc.- Lemoyne Pennsylvania 100% Dialysis Services of Pennsylvania, Inc.- Wellsboro Pennsylvania 100% Renal Services of Pa., Inc.* Pennsylvania 100% * inactive.