UnitedHealth Group Inc. is an American managed health care company based in Minnetonka, Minnesota.

UnitedHealth Group offers products and services through two operating businesses, UnitedHealthcare and Optum, both subsidiaries of UnitedHealth Group. Optum is a healthcare service arm of UnitedHealth Group and the largest healthcare IT company in the world by revenue ($84 billion in 2016). Together, Optum and Unitedhealthcare serve approximately 115 million individuals in 2016. In 2016, the company reported an operating income of $13 billion.

UnitedHealth Group was founded in 1977 by Richard T Burke & based in Minnetonka, Minnesota.

UnitedHealthcare negotiates with providers in periodic contract negotiations; contracts may be discontinued from time to time. High-profile contract disputes can span provider networks across the nation, as in the case of a 2018 dispute with a major emergency room doctor group Envision Healthcare.

UnitedHealth Group has two foundations, the United Health Foundation and UnitedHealthcare Children’s Foundation which were formed in 1999. Since established by UnitedHealth Group in 1999 as a not for profit private foundation, the United Health Foundation has committed more than $170 million to improve health and health care.

In December 2017, UnitedHealth acquired DaVita Medical Group for $4.9 billion and Banmédica for $2.8 billion.

UnitedHealth Group ranked #5 on the 2017 Fortune 500 list.