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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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  • Insights on Transitioning From Medicaid to the New Medicare Prescription Drug Benefit

    Report

    The Kaiser Commission on Medicaid and the Uninsured convened a focus group of state Medicaid officials in November 2005 to discuss the impact of the new Medicare drug program on states and Medicaid enrollees. State insights on the transition of dual eligibles and some beneficiary experiences are discussed in new material and an audio briefing.

  • Prospects for Retiree Health Benefits as Medicare Drug Coverage Begins – Report

    Report

    Prospects for Retiree Health Benefits as Medicare Drug Coverage Begins:Findings from the Kaiser/Hewitt 2005 Survey on Retiree Health Benefits - Report This report assesses how large businesses that provide retiree health benefits to their workers are responding to the new Medicare drug benefit in 2006, their plans for the future, and the way these responses…

  • Prospects for Retiree Health Benefits as Medicare Drug Coverage Begins

    Poll Finding

    Findings from the Kaiser/Hewitt 2005 Survey on Retiree Health Benefits The 2005 Kaiser/Hewitt survey of large businesses that provide retiree health benefits to their workers assesses their responses to the new Medicare drug benefit in 2006, their plans for the future, and the way these changes affect retirees.

  • A Profile of African Americans, Latinos, and Whites with Medicare:

    Report

    This chartpack highlights demographic data about African Americans, Hispanics and whites with Medicare to highlight potential implications for outreach efforts under the new Medicare drug benefit. The information is being used in a series of November 2005 briefings at the start of the first open-enrollment period for the new benefit. Chartpack (.

  • Hispanics and the New Medicare Drug Benefit

    Poll Finding

    In a few short weeks, Medicare will undergo big changes that will have a major impact on more than 3 million Hispanic seniors and younger people with permanent disabilities who rely on Medicare for their health coverage.

  • African Americans and the New Medicare Drug Benefit

    Poll Finding

    In a few short weeks, Medicare will undergo big changes that will have a major impact on nearly 4 million African American seniors and younger people with permanent disabilities who rely on Medicare for their health coverage.