- Highmark PPOBLUE
- UPMC Health Plan
- Highmark Security
- Highmark Medicare Service
- Highmark-out of state
- Highmark Freedom
- Highmark Keystone
- Highmark BS
- Aetna
- United Health
- Health America
- UPMC for Life Med Replacement
- Cigna Pennsylvania
- Highmark Medigap Blue
- Highmark FEP
- Advantra Health Am Med
- Health Assurance
- AARP Healthcare Options
- United Health Care
- United Mine Workers
- Bankers Life
- Advantra Freedom
- Highmark Direct
- Tricare Healthnet Reg
- Great West Life and Annuity
- Health Options Administration
- Humana Claims Office
- Palmetto GBA
- Golden Rule Insurance Co
- Highmark Select
- Wisconsin Physician Service
- Aetna CSX
- UPMC Medicare Specialty
- Cigna
- WPS
- Health America One
- Medical Mutual of Ohio
- PA PPO
- WPEE Trust Fund
- Aetna Medicare
- AMA Ins Agency Inc
- Assurant Health
- MCA
- Aetna Medicare Suppl Pln
- Carelink/WV HMO for H/A
- Credit Management
- UMR
- Union Bankers Ins Co
- United Medical Resources
- USAA Life and Auto Insurance Health Claim
- William J Sutton
- APWU Health Plan
- Bankers Fidelity Life
- Builders Ben Healthassur
- Carelink
- Carelink/Advantra
- ChampVA
- Cigna-Boilermakers
- GE Financial Assurance
- GEHA Wellpath Health America
- Mutual of Omaha Company
- MVP Health Care
- National Elevator Health
- Philadelphia American
- Principal Financial Group
- Principal Life Insurance Co
- Providence Health Plan
- State Farm Health Insurance
- United American
- USAA Life Insurance Company
- Western Pennsylvania Electrical Emp
- Advantra Resubs Claims Resub
- AIG Claims
- American Continental Ins
- Amerihealth Admin
- Anthem BCBS/BCARD Ohio
- AVMA Group Health and Life Ins Trust
- Benefit Concepts Inc
- Cigna Healthcare
- Conseco Health Insurance Company
- Coventry GEHAA
- Definity Health
- EPOCH Group
- Erie Insurance
- Federal Black Lung
- First Health Network
- Fiserv Health
- Insurance Center
- Intergroup
- Intergroup Services
- Mail Handlers
- Medica Claims
- Oxford Health Plan
- Professional Risk Management
- Secure Horizons
- Sheet Metal Workers
- State Workers Insurance Fund
- Unicare
- Unison Advantage
- Unison Advantage Specialist
- Unison Health Plan MA
- USAA
- Washington National Insurance
- Wells Fargo TPA