Health Care Service Corporation

Health Care Service Corporation (HCSC), founded in 1936, is the largest customer-owned health insurer in the United States. It operates as a mutual legal reserve company owned by its members rather than shareholders, and is an independent licensee of the Blue Cross Blue Shield Association. The company serves more than 27 million people across five states - Illinois, Montana, New Mexico, Oklahoma and Texas - and employs over 35,000 people.

HCSC's product portfolio spans employer health coverage for organisations of all sizes, individual and family plans, Medicare and Medicaid offerings, pharmacy solutions, and life and dental insurance sold alongside health coverage. Its technical work concentrates on three areas: health data technology, pharmacy solutions, and health insurance operations.

The company states its mission as expanding access to quality, cost-effective healthcare, with stated priorities around improving affordability and supporting member health. Community activity includes mobile health programmes, volunteer initiatives and grant programmes reported to have reached hundreds of thousands of people.