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