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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 2008 Data Spotlight: Benefit Design

    Issue Brief

    This Medicare Part D data spotlight examines the benefit design of Medicare Part D Prescription Drug Plans (PDP) in 2008, focusing on national plans. It shows that in 2008, as in previous years, only about 10 percent of national prescription drug plans offered the defined standard benefit.

  • Medicare Part D 2009 Data Spotlight: The Coverage Gap

    Report

    This Medicare Part D data spotlight examines the coverage gap, or "doughnut hole," in Medicare drug plans available in 2009. While in the gap in coverage, Part D enrollees (other than those receiving low-income subsidies) are required to pay 100 percent of total drug costs until they reach the catastrophic coverage level.

  • 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.

  • 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.

  • The Swing States and Medicare

    Poll Finding

    The latest partnership poll from The Washington Post and the Kaiser Family Foundation explores attitudes towards Medicare among registered voters in three swing states -- Florida, Virginia, and Ohio. While the economy remains the top issue, in each state about four in ten voters say Medicare is an extremely important issue to their vote.