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Medicare Advantage in 2025: Enrollment Update and Key Trends

In 2025, more than half (54%) of eligible Medicare beneficiaries - 34.1 million out of about 62.8 million with both Medicare Parts A and B - are enrolled in Medicare Advantage plans. The Congressional Budget Office projects that the share will rise to 64% by 2034.

One in five (21%) Medicare Advantage enrollees is in a special needs plan (SNP), reflecting a steady increase in recent years. Overall, Medicare Advantage enrollment is highly concentrated among plans owned by a few firms.

Also: Medicare Advantage in 2025: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization

Medicare Advantage Enrollees Account for 25% of Inpatient Hospital Days

Most Medicare Advantage Markets are Dominated by One or Two Insurers

Medicare Advantage Quality Bonus Payments Will Total at Least $12.7 Billion in 2025

Medicare Advantage Insurers Made Nearly 50 Million Prior Authorization Determinations in 2023

New & Noteworthy
Medicare PArt D

The Uncertain Future of Medicare's Stand-Alone PDP Market and Why It Matters

This brief discusses the uncertain future of Medicare’s Part D stand-alone prescription drug plan (PDP) market, in light of declining PDP availability, rising premiums, and the unknown fate of a temporary demonstration program designed to stabilize the market more broadly. The uncertain future of the market is especially relevant for rural areas, where nearly 6 in 10 beneficiaries are enrolled in traditional Medicare and PDPs, and where there are fewer Medicare Advantage options.

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

Stand-Alone Drug Plans Cover a Larger Share of Part D Enrollees Living in the Most Rural Areas Than Medicare Advantage Plans

Key Facts About Medicare Part D Enrollment, Premiums, and Cost Sharing in 2025

Changes to Medicare Part D in 2024 and 2025 Under the Inflation Reduction Act and How Enrollees Will Benefit

Prescription Drugs

The Effect of Delaying the Selection of Small Molecule Drugs for Medicare Drug Price Negotiation

Part of a recent executive order from President Trump directs the Secretary of HHS to work with Congress to implement a change in the Medicare Drug Price Negotiation Program to delay negotiation of so-called “small molecule” drugs beyond 7 years after FDA approval under current law. If that timeframe had already been in place, more than half of the Part D drugs that were selected for price negotiation in the first or second rounds – 13 out of 25 – would not have been eligible at the time drugs were selected.

FAQs About the IRA's Medicare Drug Price Negotiation Program

Allowing Medicare to Negotiate Drug Prices Is Broadly Popular

The Facts About the $35 Insulin Copay Cap in Medicare

Enrollees in Most Rural Areas Rely More on Stand-alone Part D Plans

Data Visualization

The Facts About Medicare Spending

This interactive provides the facts on Medicare spending. Medicare, which serves 67 million people and accounts for 12 percent of the federal budget and 21 percent of national health spending, is often the focus of discussions about health expenditures, health care affordability and the sustainability of federal health programs.

Explore data on enrollment growth, Medicare spending trends overall and per person, growth in Medicare spending relative to private insurance, spending on benefits and Medicare Advantage, Part A trust fund solvency challenges, and growth in out-of-pocket spending by beneficiaries.

Related: FAQs on Medicare Financing and Trust Fund Solvency

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  • Medicare Part D at Ten Years: The 2015 Marketplace and Key Trends, 2006-2015

    Report

    Since 2006, Medicare beneficiaries have had access through Medicare Part D to prescription drug coverage offered by private plans, either stand-alone prescription drug plans (PDPs) or Medicare Advantage prescription drug plans (MA-PD plans). Now in its tenth year, Part D has evolved due to changes in the private plan marketplace and the laws and regulations that govern the program. This report presents findings from an analysis of the Medicare Part D marketplace in 2015 and changes in features of the drug benefit offered by Part D plans since 2006.

  • Kaiser Health Tracking Poll: September 2015

    Feature

    As the Centers for Medicare & Medicaid Services prepares to finalize a plan to pay physicians for discussing end-of-life treatment options with Medicare patients, this month’s Kaiser Health Tracking Poll finds that about 8 in 10 of the public favors Medicare and private insurance covering such discussions and about 9 in 10 say doctors should have these discussions with their patients. However, relatively few (17 percent) say they’ve had such discussions with a doctor or other health care provider, while half of the public says they would want to have such a discussion. Overall, opinion of the health care law has remained divided with similar shares reporting favorable views (41 percent) and unfavorable views (45 percent), with opinion starkly divided by party. The Kaiser Health Policy News Index also finds that the 2016 presidential election is the most widely followed news story included in this month’s Index, placing far ahead of health policy news stories.

  • Public Strongly Favors End-of-Life Conversations Between Doctors and Patients, With About Eight in 10 Saying Medicare and Other Insurers Should Cover These Visits

    News Release

    Six in 10 Oppose 'Cadillac Plan Tax' on High-Cost Health Plans Set to Take Effect in 2018, But Cost Savings Argument Can Change Some Opinions Views on the Affordable Care Act Remain Divided: 45% Unfavorable, 41% Favorable As the Centers for Medicare & Medicaid Services prepares to finalize a plan to pay physicians for discussing…

  • Long-Term Care in the United States: A Timeline

    Other

    Long-term care (LTC) in the United States has evolved over the course of the last century to better serve the needs of seniors and person with disabilities. This long-term care timeline outlines the major milestones in LTC from the nursing home era, which created an institutional bias in LTC, to the era of home and community based services (HCBS) and integration, and into the era of health reform and beyond.

  • Dual Eligible Demonstrations: The Beneficiary Perspective

    Issue Brief

    This issue brief provides insights about initial implementation of the financial alignment demonstrations from the perspective of dual eligible beneficiaries in Massachusetts, Ohio, and Virginia, based on 12 individual interviews conducted in early 2015. Profiles of six beneficiaries are presented to illustrate representative program experiences, along with key findings from across all of the interviews.

  • Survey Finds Many Primary Care Physicians Have Negative Views of the Use of Quality Metrics and Penalties for Unnecessary Hospital Readmissions 

    News Release

    Primary Care Providers View Health IT as Improving Quality, But Tilt Negatively on ACOs Half of the nation's primary care physicians view the increased use of quality-of-care metrics and financial penalties for unnecessary hospitalizations as potentially troubling for patient care, according to a new survey from The Commonwealth Fund and the Kaiser Family Foundation.

  • Primary Care Providers’ Views Of Recent Trends In Health Care Delivery And Payment

    Poll Finding

    A new survey from The Commonwealth Fund and The Kaiser Family Foundation asked primary care providers—physicians, nurse practitioners, and physician assistants—about their experiences with and reactions to recent changes in health care delivery and payment. Providers’ views are generally positive regarding the impact of health information technology on quality of care, but they are more divided on the increased use of medical homes and accountable care organizations. Overall, providers are more negative about the increased reliance on quality metrics to assess their performance and about financial penalties.

  • Medicare and Medicaid at 50 Years: Perspectives of Beneficiaries, Health Care Professionals and Institutions, and Policy Makers

    From Drew Altman

    In this article for the Journal of the American Medical Association (JAMA), Drew Altman and former U.S. Senate Majority Leader William Frist examine the roles the Medicaid and Medicare play in the health system today from the perspectives of the public and beneficiaries, providers, and policymakers, and discusses the challenges they face in the future. The article is accompanied by an audio interview with Altman and Frist, who is a member of the Foundation’s board of trustees.

  • New Article and Infographics in JAMA Examine Medicaid and Medicare at 50 Years

    News Release

    The July 28 special issue of the Journal of the American Medical Association (JAMA) includes an article written by Kaiser Family Foundation President and CEO Drew Altman and former U.S. Senate Majority Leader William H. Frist, MD, and two infographics from the Foundation that examine the past, present, and future of Medicaid and Medicare.