Dayton, OH, USA

CareSource is a nonprofit that began as a managed health care plan serving Medicaid members in Ohio. Today, it provides public health care programs including Medicaid, Medicare, and Marketplace. The company is headquartered in Dayton, Ohio. It is the largest Medicaid plan in Ohio and second largest in the United States. In 2016, the company had more than 1.5 million members in four states.