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