Share of Medicare Beneficiaries Enrolled in Medicare Advantage Plans

Note: Includes MSAs, cost plans, demonstration plans, and Special Needs Plans as well as other Medicare Advantage plans.

Data Source: Kaiser Family Foundation analysis of CMS Medicare Advantage enrollment files, 2008-2015, and MPR, “Tracking Medicare Health and Prescription Drug Plans Monthly Report,” 1999-2007; enrollment numbers from March of the respective year, with the exception of 2006, which is from April.

Source: Kaiser Family Foundation: Medicare Advantage and Traditional Medicare: Is the Balance Tipping?