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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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  • Toplines: July/August 2005 Health Poll Report Survey

    Poll Finding

    Health News Index July/August, 2005 These toplines provide the complete survey questions and responses to the July/August 2005 Kaiser Health Poll Report, a bimonthly report designed to provide key tracking information on public opinion about health care topics to journalists, policymakers and the general public.

  • Tracking Poll Finds Seniors Split on Medicare Drug Benefit

    Poll Finding

    Tracking Poll Finds Seniors Now Split on Medicare Drug Benefit This August tracking survey shows modest progress in seniors' knowledge about the Medicare drug benefit. Also, for the first time, the tracking poll shows seniors are as likely to say that they have a favorable impression of the drug benefit as an unfavorable one.

  • Chart Pack: Views on the Medicare Prescription Drug Benefit

    Poll Finding

    This chartpack highlights key results and trends from the Kaiser Family Foundation's August 2005 tracking poll looking at seniors' views and knowledge about the new Medicare prescription drug benefit. Survey Chartpack (.

  • Medicare at 40

    Video

    The Kaiser Family Foundation has produced three documentaries to mark the 40th anniversary of Medicare and Medicaid. The documentaries examine the social needs that led policymakers to create these programs, the expectations of what they would achieve and the reality of these programs today. Key policymakers, staff officials and members of Congress involved in the creation and implementation of Medicare and Medicaid are interviewed. Extensive use of historic video helps tell the story of these landmark social programs.

  • Medicare and Medicaid at 40

    Video

    The Medicare and Medicaid health coverage programs were signed into law July 30, 1965. The Kaiser Family Foundation has some new resources that examine how Medicare and Medicaid came into existence and how they have evolved over the past 40 years. You will find new documentaries and extended interviews with key policymakers and government officials examining the origins of Medicare and Medicaid, new interactive historical timelines, a chart pack of key information and statistics, a webcast of a retrospective of the two programs with historian Robert Dallek and key government officials responsible for the programs over the past 40 years, and many other background resources on the two programs.

  • Medicare Chart Book 2005

    Other Post

    This updated resource features more than 80 charts and tables with detailed information about the Medicare program and the 42 million seniors and younger people with disabilities who rely on the program for health insurance coverage. It covers a wide range of relevant data, including state-by-state information when available.

  • May/June 2005 Kaiser Health Poll Report: Toplines

    Poll Finding

    May/June 2005 Kaiser Health Poll Report - Toplines The May/June Kaiser Health Poll Report featured topic explores the public's views on long-term care. The featured topic includes current expectations about paying for nursing home care, views on nursing homes, and attitudes about the government's role in regulating nursing home quality.

  • Medicare Prescription Drug Improvement and Modernization Act Implementation Timeline: June 2004 – December 2006 Key Dates

    Report

    Key Implementation Dates for the Medicare Prescription Drug Benefit This timeline presents important dates and deadlines of key implementation activities related to the Medicare Prescription Drug, Improvement, and Modernization Act of 2003 (MMA). It runs from the beginning of 2005 through the end of 2006, the first year of the new Medicare drug benefit.