Becker's Healthcare November 21, 2024
The vast majority of Medicare Advantage markets are highly concentrated, according to the American Medical Association’s annual Competition in Health Insurance report.
In 91% of MA markets, one insurer controls at least 30% of the market, and in 30% of markets, the largest insurer controls more than 50% of the market. UnitedHealth Group is the largest Medicare Advantage insurer overall, with a national market share of 29%.
The largest Medicare Advantage insurer by state, by market share:
Alabama
UnitedHealth: 43%
Arizona
UnitedHealth: 48%
Arkansas
UnitedHealth: 42%
California
Kaiser: 43%
Colorado
UnitedHealth: 50%
Connecticut
UnitedHealth: 37%
Delaware
UnitedHealth: 37%
Florida
Humana: 31%
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