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