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