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