The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
In the latest post in the Policy Insights series, Tricia Neuman and Gretchen Jacobson examine the surprising growth in Medicare Advantage enrollment following payment reductions included in the Affordable Care Act. Previous columns in the Policy Insights series are also available on kff.org.
This Policy Insight explores possible explanations for the continued rise in Medicare Advantage enrollment between 2010 and 2013 in spite of a projected decrease following payment changes in the Affordable Care Act (ACA).
This Data Spotlight provides an overview of Medicare Advantage enrollment patterns in March 2014, and examines variations by plan type, state, and firm. It also analyzes trends in premiums paid by beneficiaries enrolled in Medicare Advantage plans and describes the changes in limits on out-of-pocket expenses and prescription drug coverage in the Part D “donut hole” provided by the plans in 2014.
A new brief from the Kaiser Family Foundation documents the continuing climb in Medicare Advantage plan enrollment, even at a time when payments to such plans are being reduced under the Affordable Care Act. Despite spending reductions enacted in the ACA to reduce historical overpayments to Medicare Advantage plans, from March 2013 to March 2014 enrollment in Medicare Advantage plans grew by 9 percent, or 1.4 million people, to reach a total of 15.7 million…
Total Medicare Advantage Enrollment, 1992-2014 Download Source MPR/Kaiser Family Foundation analysis of CMS Medicare Advantage enrollment files, 2008-2014, and MPR, “Tracking Medicare Health and Prescription Drug Plans Monthly Report,” 2001-2007. Report of the Medicare Board of Trustees, 2002.
This data spotlight report examines trends in the Medicare Advantage marketplace, including the choices available to Medicare beneficiaries in 2014, premium levels and other plan features. Medicare beneficiaries, on average, will have 18 private Medicare Advantage plans available to them in 2014, reflecting both new plans entering the market and old plans exiting it. If Medicare Advantage enrollees remain in their current plans, average monthly premiums will rise by almost $5 per month, or 14…
This short explainer highlights some of the key information for people with Medicare about how Affordable Care Act, also known as Obamacare, may affect them.
Total Medicare Private Health Plan Enrollment, 1999-2013 Download Source MPR/Kaiser Family Foundation analysis of CMS Medicare Advantage enrollment files, 2008-2013, and MPR, “Tracking Medicare Health and Prescription Drug Plans Monthly Report,” 2001-2007; enrollment numbers from March of the respective year, with the exception of 2006, which is from April.
Distribution of Enrollment in Medicare Advantage Plans, by Plan Type, 2013 Download Source MPR / KFF analysis of the Centers for Medicare and Medicaid Services (CMS) Medicare Advantage enrollment files, 2013.
Share of Medicare Beneficiaries Enrolled in Medicare Advantage Plans, by State, 2013 Download Source MPR/Kaiser Family Foundation analysis of CMS State/County Market Penetration Files, 2013.
© 2026 KFF