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