UnitedHealthcare had the highest percentage of Medicare Advantage enrollees in 2013 and 2023, but its market share grew by 7 percentage points over that span, according to an Aug. 9 report from KFF.
Here is how UnitedHealthcare and other payers' Medicare Advantage market share has changed over the past decade:
UnitedHealthcare
2013: 22 percent
2023: 29 percent
Humana
2013: 17 percent
2023: 18 percent
BCBS plans
2013: 16 percent
2023: 14 percent
CVS Health
2013: 7 percent
2023: 11 percent
Kaiser Permanente
2013: 8 percent
2023: 6 percent
Centene
2013: 5 percent
2023: 4 percent
Cigna
2013: 3 percent
2023: 2 percent
All other insurers
2013: 21 percent
2023: 16 percent