Humana Inc. is a for-profit health insurance company. The company was founded by David A. Jones, Sr. and Wendell Cherry in 1961 and is headquartered in Louisville, Kentucky. It has been ranked in the top 50 on the Fortune 500 list of largest American companies by revenue. It is widely considered to be the third largest health-insurance provider in the US. The firm is split into the following business units: Retail, Group and Specialty, and Healthcare Services. The Retail business unit retail products to individuals. The Group and Specialty business units provide commercial medical products aimed at large organizations. The Healthcare Services business unit offers services that include pharmacy solutions, clinical care, and predictive informatics services.