HCSC
The biggest US customer-owned health insurance provider is Health Care Service Corporation (HCSC), a mutual legal reserve corporation. The corporation employs more than 23,000 employees in more than 60 local offices and provides services to more than 16 million members across five states (Illinois, New Mexico, Montana, Texas, and Oklahoma).
Through its affiliates and subsidiaries, including Dearborn Group, HCSC Insurance Service Company, Dental Network of America, Medecision, Prime Therapeutics, Availity, and TriWest Healthcare Alliance, HCSC provides a comprehensive range of life and health insurance products as well as related services.