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