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