• Blue Cross Blue Shield
• Cigna
• Commercial Insurance Company
• CoreSource
• Coventry Health Care
• First Health (Coventry Health Care)
• Golden Rule
• Government Employees Health Association (GEHA)
• Humana PPO
• Mail Handlers Benefit Plan (MHBP)
• MedHealthInsurance
• Medico
• Meritain Health
• MultiPlan
• Mutual of Omaha
• National Elevator
• Tricare
• UnitedHealthCare
• WellCare