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