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:UnitedHealthcare2013: 22 percent2023: 29 percent Humana2013: […]