| DOCTOR'S SURGICAL PARTNERSHIP, LLCMelbourne, FL · Active | Melbourne, FL | LLC | Mar 5, 2021 | Active |
| MIMA OF MELBOURNE PROPERTY OWNERS' ASSOCIATION, INC.Melbourne, FL · Active | Melbourne, FL | Nonprofit | May 7, 2009 | Active |
| VIERA HOSPITAL, INC.Melbourne, FL · Active | Melbourne, FL | Nonprofit | Jan 8, 2009 | Active |
| DOCTORS GI PARTNERSHIP, LTD.Palm Bay, FL · Active | Palm Bay, FL | Partnership | Nov 28, 2001 | Active |
| PHYSICIANS GI PARTNERSHIP, INC.Palm Bay, FL · Active | Palm Bay, FL | Corporation | Nov 22, 2000 | Active |
| HEALTH FIRST ADMINISTRATIVE PLANS, INC.Rockledge, FL · Active | Rockledge, FL | Nonprofit | Jun 9, 2017 | Active |
| HEALTH FIRST COMMERCIAL PLANS, INC.Rockledge, FL · Active | Rockledge, FL | Nonprofit | Jun 9, 2017 | Active |
| HEALTH FIRST HEALTH PLANS, INC.Rockledge, FL · Active | Rockledge, FL | Nonprofit | Dec 31, 2014 | Active |
| HEALTH FIRST PHYSICIANS REAL ESTATE, LLCRockledge, FL · Active | Rockledge, FL | LLC | Feb 14, 2013 | Active |
| HEALTH FIRST MEDICAL GROUP, LLCRockledge, FL · Active | Rockledge, FL | LLC | Dec 20, 2012 | Active |
| HEALTH FIRST PHYSICIAN SPECIALTIES, INC.Rockledge, FL · Inactive | Rockledge, FL | Corporation | Aug 1, 2008 | Inactive |
| VIERA MEDICAL PLAZA AT VIERA HEALTH PARK, LLCRockledge, FL · Active | Rockledge, FL | LLC | Oct 18, 2006 | Active |
| MIMA REAL ESTATE, L.L.C.Rockledge, FL · Active | Rockledge, FL | LLC | Jan 2, 2001 | Active |
| HOLMES REGIONAL ENTERPRISES, INC.West Melbourne, FL · Active | West Melbourne, FL | Corporation | Jul 28, 1981 | Active |
| JAMES E. HOLMES REGIONAL MEDICAL CENTER AUXILIARY, INC.Melbourne, FL · Inactive | Melbourne, FL | Nonprofit | Apr 10, 1962 | Inactive |
| HOLMES REGIONAL MEDICAL CENTER, INC.Melbourne, FL · Active | Melbourne, FL | Nonprofit | Feb 13, 1969 | Active |
| HOSPICE OF HEALTH FIRST, INC.West Melbourne, FL · Active | West Melbourne, FL | Nonprofit | Aug 16, 1978 | Active |
| CAPE CANAVERAL HOSPITAL FOUNDATION, INC.Cocoa Beach, FL · Inactive | Cocoa Beach, FL | Nonprofit | Aug 29, 1980 | Inactive |
| HICKORY STREET MEDICAL CENTER CONDOMINIUM ASSOCIATION, INC.Rockledge, FL · Inactive | Rockledge, FL | Nonprofit | Oct 5, 1981 | Inactive |
| PALM BAY HOSPITAL, INC.Rockledge, FL · Inactive | Rockledge, FL | Nonprofit | Feb 8, 1983 | Inactive |
| DOCTOR'S SURGICAL PARTNERSHIP, LTD.Melbourne, FL · Inactive | Melbourne, FL | Partnership | Feb 18, 1998 | Inactive |
| HEALTH FIRST QUICKCARE, LLCMelbourne, FL · Inactive | Melbourne, FL | LLC | Oct 9, 2009 | Inactive |
| CHIRON URGENT CARE LLCTitusville, FL · Inactive | Titusville, FL | LLC | Sep 25, 2012 | Inactive |
| HEALTH FIRST OUTPATIENT DIAGNOSTICS, LLCRockledge, FL · Inactive | Rockledge, FL | LLC | Aug 28, 2013 | Inactive |
| HEALTH FIRST PHYSICIANS, LLCRockledge, FL · Active | Rockledge, FL | LLC | Dec 29, 2025 | Active |
| HEALTH FIRST PHYSICIAN SPECIALTIES, LLCRockledge, FL · Active | Rockledge, FL | LLC | Dec 29, 2025 | Active |
| CAPE CANAVERAL HOSPITAL, INC.Cocoa Beach, FL · Active | Cocoa Beach, FL | Nonprofit | Dec 4, 1984 | Active |
| MEMORY DISORDER CLINIC, INC.Melbourne, FL · Active | Melbourne, FL | Nonprofit | Oct 21, 1991 | Active |
| ROYAL OAKS PROFESSIONAL CONDOMINIUM ASSOCIATION, INC.Titusville, FL · Active | Titusville, FL | Nonprofit | Dec 20, 1993 | Active |
| HEALTH FIRST SHARED SERVICES, INC.Rockledge, FL · Active | Rockledge, FL | Nonprofit | Jul 31, 1995 | Active |
| HEALTH FIRST, INC.Rockledge, FL · Active | Rockledge, FL | Nonprofit | Jul 20, 1998 | Active |
| HEALTH FIRST INSURANCE, INC.Rockledge, FL · Inactive | Rockledge, FL | Corporation | Sep 7, 2011 | Inactive |
| HEALTH FIRST ADMINISTRATIVE PLANS, INC.Rockledge, FL · Inactive | Rockledge, FL | Corporation | Jan 16, 2015 | Inactive |
| HEALTH FIRST COMMERCIAL PLANS, INC.Rockledge, FL · Inactive | Rockledge, FL | Corporation | Jan 20, 2015 | Inactive |
| HEALTH FIRST MEDICAL MANAGEMENT, INC.Rockledge, FL · Active | Rockledge, FL | Corporation | Nov 7, 1995 | Active |
| HEALTH FIRST PHYSICIANS, INC.Rockledge, FL · Inactive | Rockledge, FL | Corporation | Dec 7, 1995 | Inactive |
| HEALTH FIRST HOLDING CORP.Rockledge, FL · Active | Rockledge, FL | Corporation | Mar 2, 1998 | Active |
| PHYSICIANS' SURGICAL PARTNERSHIP, INC.Melbourne, FL · Inactive | Melbourne, FL | Corporation | Jul 16, 1998 | Inactive |
| CAPE HEALTH PROPERTIES, INC.Cocoa Beach, FL · Active | Cocoa Beach, FL | Corporation | Aug 21, 1991 | Active |