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