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