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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’s Role for Dual Eligible Beneficiaries

    Issue Brief

    About 9 million low-income seniors and younger people with disabilities in the United States are covered by both Medicare and Medicaid. This brief examines the role of Medicare in providing health coverage for these beneficiaries.

  • medicare-spending-briefs

    Other Post

    Data Spotlights Examine Financial Burden of Health Care on Medicare Beneficiaries With renewed attention to the nation’s long-term budget deficit and the national debt, proposed changes to Medicare and other federal entitlement programs could significantly affect health coverage and spending for millions of older and disabled Americans.

  • Kaiser Health Tracking Poll — February 2012

    Feature

    In the midst of continuing debate on the future of the Medicare program, the February Kaiser Family Foundation Tracking Poll finds most Americans and most seniors favor the status quo, though arguments about the program’s solvency have the potential to sway opinion toward new proposals.

  • Survey of People with Disabilities

    Poll Finding

    People with disabilities are at risk in the health-care system because of their wide-ranging health-care needs, their relatively heavy use of prescription drugs, health-care and support services, and typically low incomes. A new survey of people with permanent mental and/or physical disabilities explores their health-care experiences and challenges in accessing and paying for care.

  • New Medicare Drug Benefit’s Impact on States and Low-Income Beneficiaries

    Other Post

    New Medicare Drug Benefit's Impact on States and Low-Income Beneficiaries The recently signed Medicare prescription drug bill transfers responsibility for providing prescription drug coverage to dual-eligible beneficiaries from Medicaid to Medicare and creates a new subsidy program for low-income Medicare beneficiaries.

  • Implications of the New Medicare Prescription Drug Benefit for State Medicaid Budgets

    Issue Brief

    For a number of years, Governors and other state policymakers have maintained that Medicare - rather than state Medicaid programs - should play the key role in providing prescription drug coverage to Medicare beneficiaries, including those who also qualify for Medicaid because they are impoverished and/or have extensive health care needs (i.e, the "dual eligibles").