- Aetna
- Blue Cross Blue Shield
- CarePlus
- Cigna
- Coventry
- HealthSpring
- Humana
- Clarian Health Care
- Community Health Alliance
- Optum
- Fedmed
- Galaxy
- Healthsmart
- Parkview Health Plan
- Prime Health Services
- Universal American / Pyramid Life
- Tricare
- United Mine Workers
- United Health Group