| 1199SEIU in Harrison County, MS | AMERIGROUP in Harrison County, MS |
| APS Healthcare in Harrison County, MS | Aetna in Harrison County, MS |
| Alliance in Harrison County, MS | AmeriHealth in Harrison County, MS |
| American Behavioral in Harrison County, MS | Beech Street in Harrison County, MS |
| Behavioral Health Systems in Harrison County, MS | BlueCross and/or BlueShield in Harrison County, MS |
| CCN in Harrison County, MS | CHIPA/College Health in Harrison County, MS |
| Cascade Health in Harrison County, MS | Ceridian in Harrison County, MS |
| ChoiceCare in Harrison County, MS | Cigna in Harrison County, MS |
| ComPsych in Harrison County, MS | Corphealth in Harrison County, MS |
| Coventry in Harrison County, MS | First Choice Health in Harrison County, MS |
| First Health in Harrison County, MS | GHI/Group Health Incorporated in Harrison County, MS |
| Great-West in Harrison County, MS | Guardian in Harrison County, MS |
| HFN in Harrison County, MS | HIP/Health Plan of New York in Harrison County, MS |
| Harvard Pilgrim Health Care in Harrison County, MS | Health Net in Harrison County, MS |
| Holman Group in Harrison County, MS | Horizon Healthcare in Harrison County, MS |
| Humana in Harrison County, MS | Integrated Health Plan in Harrison County, MS |
| Interplan in Harrison County, MS | Kaiser in Harrison County, MS |
| LifeWise in Harrison County, MS | MAMSI in Harrison County, MS |
| MHN/Managed Health Network in Harrison County, MS | Magellan Behavioral Health in Harrison County, MS |
| MagnaCare in Harrison County, MS | Medica in Harrison County, MS |
| Medicaid in Harrison County, MS | Medical Mutual in Harrison County, MS |
| Medicare in Harrison County, MS | Multiplan in Harrison County, MS |
| NCPPO in Harrison County, MS | ODS in Harrison County, MS |
| Oxford in Harrison County, MS | PHCS/Private Health Care Systems in Harrison County, MS |
| PPOM in Harrison County, MS | PacifiCare in Harrison County, MS |
| PacificSource in Harrison County, MS | PreferredOne in Harrison County, MS |
| Providence in Harrison County, MS | Sloans Lake in Harrison County, MS |
| TRICARE in Harrison County, MS | TriWest0127 in Harrison County, MS |
| Tufts in Harrison County, MS | UniCare in Harrison County, MS |
| Uniform in Harrison County, MS | United in Harrison County, MS |
| VMC in Harrison County, MS | ValueOptions in Harrison County, MS |
| WellPoint in Harrison County, MS |