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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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  • Health Coverage and Expenses: Impact on Older Women’s Economic Well-Being

    Issue Brief

    In this article in the Journal of Women, Politics & Policy, researchers from the Kaiser Family Foundation examine how health issues that women face over the course of their lives, as well as policies that shape Medicare, Medicaid and other supplemental coverage, can affect retired women's economic well-being.

  • Snapshots from the Kitchen Table: Family Budgets and Health Care

    Video

    This Kaiser Family Foundation documentary, “Snapshots from the Kitchen Table: Family Budgets and Health Care,” profiles several American families who are struggling to make ends meet. It depicts the narrow financial ledge on which millions of low- and middle- income working households stand even in normal economic times, and illustrates the central role that health care costs and coverage play in a household’s economic stability. Some of the families profiled have health insurance, others do not.

  • Nursing Home Reform: Then and Now

    Video

    To mark the 20th anniversary of the passage of landmark federal legislation to improve the quality of nursing home care, the Omnibus Budget Reconciliation Act of 1987 (known as OBRA 87), this video examines the history surrounding the law. The video includes a look at the state of nursing home care before the law, an overview of the legislative process that brought about the law, and recent developments in nursing home quality. The video features historical clips and new interviews of key individuals from government, the nursing home industry, and consumer advocates who were instrumental in the historical developments related to nursing home reform.

  • Transitions 2006

    Video

    On January 1, 2006, the six million Americans who are covered by both Medicare and Medicaid saw a change in how their prescription drugs are covered. The dual eligible population was transitioned from Medicaid into the Medicare prescription drug benefit. As a group, these beneficiaries are poorer and sicker than those on Medicare. Consequently, they have more extensive health and prescription drug needs than most Medicare beneficiaries.

  • Transitions 2005

    Video

    Transitions is a video that explores some of the issues and challenges “dual eligibles” may face during the transition from Medicaid drug coverage to Medicare.

  • Visualizing Health Policy: Medicare’s Role and Future Challenges

    Other

    November 2012 infographic in the Visualizing Health Policy series takes a look at Medicare—who it covers; the services its beneficiaries use; and the balance policymakers must strike between setting fair payments, keeping care affordable, and sustaining the program for future generations.

  • 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.