Leading health insurance companies in the U.S. 2018, by direct premiums written

In 2018, UnitedHealth Group Inc. wrote direct health insurance premiums amounting to approximately 100.6 billion U.S. dollars making it the largest health insurer in the United States. Anthem Inc. and Humana Inc. followed behind with 66.12 billion U.S. dollars and 55.9 billion U.S. dollars in direct premiums written in that year respectively.

UnitedHealth Group

UnitedHealth Group Inc. is a health care company headquartered in Minnesota. It offers products and services such as health insurance coverage, health care savings accounts and pharmacy benefits. However, the majority of their revenues are generated through insurance premiums and it looks set to remain so in the near future. Optum is the business segment, which focuses on health care services and OptumRx is one of the largest pharmacies in the United States.

Revenue outlook

UnitedHealth Group’s revenues have been steadily climbing over the past decade and show no signs of stopping. Industry experts expect their revenues to increase across all segments in 2019.

Leading health insurance companies in the United States in 2018, by direct premiums written

Premiums in billion U.S. dollars
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Release date

July 2019


United States

Survey time period


Supplementary notes

Based on health insurer annual statement data. Does not include health insurance data from the property/casualty and life/health annual statements. Excludes territories.
*CVS Health and Aetna completed a merger in 2018.

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Statistics on "Health insurance in the United States"

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