| MCP-MSC ACQUISITION, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Mar 24, 2022 | Active |
| THE ONE CALL FOUNDATION, INC.Jacksonville, FL · Active | Jacksonville, FL | Nonprofit | May 6, 2020 | Active |
| OC MEDICAL HOLDINGS, LLCJacksonville, FL · Active | Jacksonville, FL | LLC | Feb 26, 2020 | Active |
| OCM RIN, INCJacksonville, FL · Active | Jacksonville, FL | Corporation | Apr 16, 2019 | Active |
| ONE CALL CORPORATIONJacksonville, FL · Active | Jacksonville, FL | Corporation | Jan 17, 2017 | Active |
| NAVIGERE SERVICES, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Apr 13, 2016 | Active |
| MSC CARE MANAGEMENT, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Jan 8, 2009 | Active |
| ALIGNNETWORKS, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Jul 25, 2005 | Active |
| ONE CALL MEDICAL, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Jul 26, 2000 | Active |
| TECHHEALTH.COM, INC.Jacksonville, FL · Active | Jacksonville, FL | Corporation | Jan 14, 2000 | Active |
| GAMBRO MEDICAL SUPPLY, INC.Fort Lauderdale, FL · Inactive | Fort Lauderdale, FL | Corporation | Sep 26, 2001 | Inactive |
| GAMBRO SYSTEMS, INC.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Dec 11, 2003 | Inactive |
| ARA-SUN CITY DIALYSIS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | May 9, 2001 | Active |
| ARA-ORANGE PARK LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Oct 17, 2001 | Active |
| ARA-WEST JACKSONVILLE LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 8, 2001 | Active |
| ARA-SEBRING DIALYSIS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 4, 2002 | Active |
| ARA-TITUSVILLE DIALYSIS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Sep 27, 2002 | Active |
| J.N.K. TITLE LLCWindermere, FL · Inactive | Windermere, FL | LLC | Apr 13, 2012 | Inactive |
| ARA-DAYTONA BEACH DIALYSIS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Oct 17, 2003 | Active |
| MIDDLEBURG DIALYSIS LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 15, 2005 | Active |
| HILLIARD DIALYSIS CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 26, 2005 | Active |
| DELRAY BEACH DIALYSIS CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 26, 2005 | Active |
| ATLANTIC KIDNEY CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 26, 2005 | Active |
| JUPITER KIDNEY CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 26, 2005 | Active |
| BRADENTON DIALYSIS CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jul 5, 2006 | Active |
| DIALYSIS CARE CENTER OF PALM COAST LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 14, 2007 | Active |
| WESTERN COMMUNITY DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Nov 19, 2007 | Active |
| SOUTHWEST JACKSONVILLE DIALYSIS CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 17, 2008 | Active |
| NORTHWEST JACKSONVILLE DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 25, 2008 | Active |
| LEHIGH ACRES DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Sep 8, 2008 | Active |
| FLORIDA DIALYSIS CENTER OF ORLANDO, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Aug 26, 2009 | Active |
| ARA-NAPLES SOUTH DIALYSIS CENTER LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Mar 9, 2010 | Active |
| ST. PETERSBURG KIDNEY CARE, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jul 8, 2011 | Active |
| FORT LAUDERDALE RENAL DIALYSIS, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 21, 2012 | Active |
| GREENACRES DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Aug 10, 2012 | Active |
| ARLINGTON DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 30, 2013 | Active |
| FORT MYERS KIDNEY CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Feb 1, 2013 | Active |
| CONTINENTAL DIALYSIS CARE CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Aug 15, 2013 | Active |
| ST. PETERSBURG KIDNEY CARE SOUTH, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Sep 13, 2013 | Active |
| FLORIDA DIALYSIS CENTER OF CELEBRATION, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 18, 2014 | Active |
| FLORIDA DIALYSIS CENTER OF HAINES CITY, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 18, 2014 | Active |
| CLEWISTON DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Dec 16, 2014 | Active |
| OKEECHOBEE KIDNEY CENTER, LLCLocation not reported, FL · Inactive | Location not reported, FL | LLC | Dec 16, 2014 | Inactive |
| BELLE GLADE DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Dec 16, 2014 | Active |
| LAKE GRAY DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Apr 27, 2016 | Active |
| TARPON SPRINGS DIALYSIS, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jun 6, 2016 | Active |
| KIDNEY CENTER OF TRADITION, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jul 13, 2016 | Active |
| PALM SPRINGS DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jul 13, 2016 | Active |
| SEBASTIAN DIALYSIS CENTER, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Sep 6, 2016 | Active |
| KIDNEY CENTER OF WESLEY CHAPEL, LLCLocation not reported, FL · Active | Location not reported, FL | LLC | Jan 18, 2019 | Active |