“This Medicare Advantage Data Spotlight provides an overview of recent changes made to the Medicare Advantage program and examines trends in plan participation, premiums and certain benefits. About 12 million people, or nearly a quarter of the Medicare population, are enrolled in Medicare Advantage, the privately administered plans that are an alternative to the traditional fee-for-service Medicare program. The analysis was conducted by a team researchers at Mathematica Policy Research, Inc. and the Kaiser Family Foundation.”