EXHIBIT 21.1 SUBSIDIARIES OF THE COMPANY As of January 13, 2000 NAME STRUCTURE JURISDICTION OF INCORPORATION Assisi S.r.l. Sociedad de responsibilidad limitada (6) Astro, Hobby, West Mt., Renal Care Ltd. Partnership Limited Partnership DE Bay Area Dialysis Partnership Partnership CA Beta Dial S.r.l. Sociedad de responsibilidad limitada (6) Beverly Hills Dialysis Partnership Partnership+ CA Burbank Dialysis Partnership Partnership CA Capital Dialysis Partnership Partnership CA Carroll County Dialysis Facility, Inc. Corporation MD Carroll County Dialysis Facility Limited Partnership Partnership MD Centro De Tratamiento Medico Renal S.A. Sociedad Anonima (3) Cercos S.r.l. Sociedad de responsibilidad limitada (6) Continental Dialysis Center, Inc. Corporation VA Continental Dialysis Center of Springfield-Fairfax, Inc. Corporation VA Crescent City Dialysis Partnership Partnership LA Crystal River Dialysis, LLC Limited Liability Company FL DialTorre S.r.l. Sociedad de responsibilidad limitada (6) Dialysis Specialists of Dallas, Inc. Corporation TX Dialysis Treatment Centers of Macon, LLC Limited Liability Company GA Due Torri S.r.l. Sociedad de responsibilidad limitada (6) East End Dialysis Center, Inc. Corporation VA Eastmont Partnership Partnership CA Eaton Canyon Dialysis Partnership Partnership CA Elberton Dialysis Center, Inc. Corporation GA Elmbrook Kidney Center, Inc. Corporation TX Enfermedades Renales - Centro de Dialisis S.A. Sociedad Anonima* (2) Enne S.r.l. Sociedad de responsibilidad limitada (6) Fanus S.r.l. Sociedad de responsibilidad limitada (6) Flamingo Park Kidney Center, Inc. Corporation FL Flaminia S.r.l. Sociedad de responsibilidad limitada (6) Flavia S.r.l. Sociedad de responsibilidad limitada (6) Garey Dialysis Center Partnership Partnership CA Guam Renal Care Partnership Partnership GU Guam Renal Management Partnership Partnership GU Houston Kidney Center/Total Renal Care Integrated Svc. Partnership DE Hutchinson Dialysis, L.L.C. Limited Liability Company# KS IL Nefrologico S.r.l. Sociedad de responsibilidad limitada (6) Imera S.A. Sociedad Anonima (3) Integrated Services Network, LP Partnership DE Instituto Privado de Nefrologia S.A. Sociedad Anonima* (7) Instituto Renal Tucuman S.A. Sociedad Anonima (4) Ionica S.r.l. Sociedad de responsibilidad limitada (6) Irno Dial S.r.l. Sociedad de responsibilidad limitada (6) Kenner Regional Dialysis Partnership Partnership LA Lincoln Park Dialysis Services, Inc. Corporation IL SUBSIDIARIES OF THE COMPANY NAME STRUCTURE JURISDICTION OF INCORPORATION Los Angeles Dialysis Center Partnership CA Mason-Dixon Dialysis Facility, Inc. Corporation MD MD Investments, LLC Partnership VA Moncrief Dialysis Center/Total Renal Care, LP Partnership# DE Nedial S.r.l. Sociedad de responsibilidad limitada (6) Nedial Napoli, S.r.l. Sociedad de responsibilidad limitada (6) Nefrologia S.r.l. Sociedad de responsibilidad limitada (6) Nefrologia Escobar S.A. Sociedad Anonima (3) New Dial S.r.l. Sociedad de responsibilidad limitada (6) Omnia Dial S.r.l. Sociedad de responsibilidad limitada (6) Open Access Sonography Corporation FL Pacific Coast Dialysis Center Partnership CA Pacific Dialysis Partnership Partnership GU Peninsula Dialysis Center, Inc. Corporation VA Peralta Renal Center Partnership+ CA Piedmont Dialysis Center Partnership+ CA Renal Diagnostic Laboratories, Inc. Corporation DE Renal Treatment Centers, Inc. Corporation DE Renal Treatment Centers - California Corporation DE Renal Treatment Centers - Hawaii, Inc. Corporation DE Renal Treatment Centers - Illinois, Inc. Corporation DE Renal Treatment Centers - Management Acquisition, Inc. Corporation DE Renal Treatment Centers - Mid-Atlantic, Inc. Corporation DE Renal Treatment Centers - Northeast, Inc. Corporation DE Renal Treatment Centers - Southeast, Inc. Corporation DE Renal Treatment Centers - West, Inc. Corporation DE RTC Argentina S.A. Sociedad Anonima (3) RTC Holdings, Inc. Corporation DE RTC Holdings International, Inc. Corporation DE RTC Supply, Inc. Corporation DE RTC - Texas Acquisition, Inc. Corporation TX RTC TN, Inc. Corporation DE Rusdial S.r.l. Sociedad de responsibilidad limitada (6) Salaria S.r.l. Sociedad de responsibilidad limitada (6) San Cristobal - TRC Dialysis Center Partnership PR San Gabriel Valley Partnership Partnership CA Sunrise Dialysis Partnership Partnership+ CA Tiburtina S.r.l. Sociedad de responsibilidad limitada (6) Total Acute Kidney Care, Inc. Corporation FL Total Renal Care Acquisition Corp. Corporation DE Total Renal Care, Inc. Corporation CA Total Renal Care Colorado, Inc. Corporation CO Total Renal Care (Denham), Limited Corporation (5) SUBSIDIARIES OF THE COMPANY NAME STRUCTURE JURISDICTION OF INCORPORATION Total Renal Care Hollywood Partnership Partnership CA Total Renal Care International Limited Corporation (5) Total Renal Care Italia S.r.l. Sociedad de responsibilidad limitada (6) Total Renal Care New York, Inc. Corporation NY Total Renal Care North Carolina, LLC Limited Liability Company DE Total Renal Care Provo, L.L.C. Limited Liability Company DE Total Renal Care Puerto Rico, Inc. Corporation PR Total Renal Care Utah, LLC Limited Liability Company DE Total Renal Care (UK) Limited Corporation (5) Total Renal Care Texas Limited Partnership Limited Partnership DE Total Renal Care West, Inc. Corporation DE Total Renal Laboratories, Inc. Corporation FL Total Renal Research Institute, Inc. Corporation DE Total Renal Support Services, Inc. Corporation DE Total Renal Support Services of North Carolina, LLC Limited Liability Company DE TRC Dyker Heights, L.P. Limited Partnership NY TRC El Paso Limited Partnership Partnership DE TRC Four Corners Dialysis Clinics, LLC Partnership NM TRC - Georgetown Regional Dialysis LLC Limited Liability Company DC TRC Germany GmbH Gesellschaft mit beschrankter Haftung (1) TRC - Indiana LLC Limited Liability Company IN TRC - Richmond Renal Care, LLC Limited Liability Company VA TRC - Petersburg, LLC Limited Liability Company DE TRC - Rogosin Group, L.P. Limited Partnership NY Tri-City Dialysis Center, Inc. Corporation VA Unidad Nefrologica Bustamante S.A. Sociedad Anonima (3) University Park Dialysis Partnership Partnership CA Vega S.r.l. Sociedad de responsibilidad de limitada (6) Wilshire Dialysis Partnership Partnership CA - ------------------------ (1) Germany (2) Province of Mendoza, Argentina (3) City of Buenos Aires, Argentina (4) Province of Tucuman, Argentina (5) United Kingdom (6) Italy (7) Province of Santiago del Estero, Argentina * These entities were each originally a Sociedad de Responsibilidad Limitada (S.r.l.), but were each transformed into a Sociedad Anonima prior to acquisition by RTC Argentina S.A. The transformation in each case is still in the process of being registered before the applicable Public Register of Commerce. + Wholly owned by Total Renal Care, Inc. with an affiliated entity. # Minority subsidiaries not consolidated for accounting purposes