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