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