Company Story
1974 - United HealthCare Corporation was founded by Paul Ellerington and a group of physicians
1977 - The company launched its first health maintenance organization (HMO) in Minnesota
1984 - United HealthCare Corporation went public with an initial public offering (IPO)
1986 - The company acquired MetraHealth Companies, Inc., expanding its presence in the health insurance market
1998 - United HealthCare Corporation merged with PacifiCare Health Systems, a California-based health insurer
2002 - The company rebranded as UnitedHealth Group Incorporated
2005 - UnitedHealth Group acquired John Alden Insurance Company, expanding its Medicare business
2012 - The company acquired DaVita Inc.'s medical insurance business
2015 - UnitedHealth Group acquired Catamaran Corporation, a pharmacy benefits management company
2020 - UnitedHealth Group completed its acquisition of DaVita Medical Group, expanding its ambulatory care services