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