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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 Spending Cuts and Hospital Productivity Gains

    News Release

    In his latest column for The Wall Street Journal's Think Tank, Drew Altman and guest co-author Dana Goldman examine hospital productivity gains, and what they may mean for hospitals’ ability to absorb spending reductions. All previous columns by Drew Altman are available online.

  • Examining Medicare Part D Policies for Extended Supplies of Medication

    Issue Brief

    Medicare Part D plan sponsors, which provide drug coverage to 45 million older adults and people with disabilities, have the option to relax their ‘refill too soon’ restrictions in response to the COVID-19 pandemic, as part of efforts to ensure adequate access to medications in disasters or emergencies. This analysis examines the share of Part D enrollees who currently have access to extended supplies of generic, brand-name, and specialty-tier drugs covered by their plan in 2020, prior to relaxation of any early-fill restrictions in response to the COVID-19 outbreak.

  • Possibilities and Limits of Telehealth for Older Adults During the COVID-19 Emergency

    Policy Watch

    Medicare has lifted several restrictions on who can receive telehealth and the types of services they can receive via telehealth during the COVID-19 public health emergency. This post discusses the possibilities and limits of telehealth for older adults, based on findings from the latest KFF Health Tracking Poll.

  • KFF Analysis: Number of Coronavirus Cases, Distribution of $30B in CARES Act funding and Medicare Advantage Penetration by State

    Fact Sheet

    Number of Coronavirus Cases, Distribution of $30B in CARES Act funding and Medicare Advantage Penetration by StateStateNumber ofCOVID-19 Cases on April 21, 2020Percent of Total COVID-19 CasesFirst Distribution of CARES Act PaymentsPercent of Total Money DistributedPercent of Medicare Beneficiaries in Medicare Advantage, 2020New York253,400.0032.1%$1,859,574,4346.2%40%New Jersey88,806.0011.3%$919,426,8013.1%29%Massachusetts39,643.005.0%$841,425,1202.8%23%Pennsylvania34,005.004.3%$1,246,250,0764.2%41%California33,866.004.3%$2,920,960,7339.7%40%Michigan32,000.004.1%$936,700,1393.1%42%Illinois31,508.004.0%$1,204,103,1804.0%25%Florida27,058.003.4%$2,220,563,1377.4%43%Louisiana24,523.003.1%$474,891,7351.6%38%Connecticut19,815.002.5%$377,981,2571.3%41%Texas20,087.002.5%$2,089,066,4527.0%37%Georgia19,398.002.5%$792,069,1602.6%37%Maryland14,193.001.8%$742,225,3062.5%11%Ohio12,919.001.6%$989,773,4173.3%39%Washington12,486.001.6%$553,838,8061.8%33%Indiana11,688.001.5%$668,604,6142.2%32%Colorado10,112.001.3%$360,905,4821.2%38%Virginia9,097.001.2%$814,360,4672.7%21%Tennessee7,238.000.9%$739,723,3472.5%38%North Carolina6,979.000.9%$919,171,0873.1%36%Missouri5,963.000.8%$618,601,1672.1%35%Rhode Island5,090.000.6%$90,459,8340.3%39%Arizona5,068.000.6%$707,587,4822.4%39%Alabama5,092.000.6%$449,481,9451.5%41%Mississippi4,512.000.6%$374,847,7901.2%20%Wisconsin4,541.000.6%$471,681,0771.6%42%South Carolina4,439.000.6%$518,022,4631.7%28%Nevada3,830.000.5%$241,471,8410.8%36%Utah3,213.000.4%$185,292,4220.6%36%Iowa3,159.000.4%$297,929,1711.0%22%Kentucky3,050.000.4%$452,761,1711.5%34%District of Columbia3,098.000.4%$84,989,0990.3%20%Delaware2,745.000.3%$154,114,1180.5%17%Oklahoma2,680.000.3%$489,853,9981.6%22%Minnesota2,470.000.3%$472,206,1221.6%43%Kansas2,070.000.3%$325,135,9501.1%19%Oregon1,956.000.2%$291,029,0251.0%42%Arkansas1,990.000.3%$326,536,0431.1%26%New Mexico1,971.000.2%$169,486,1320.6%35%South Dakota1,685.000.2%$107,650,2010.4%19%Idaho1,736.000.2%$135,028,0560.5%33%Nebraska1,648.000.2%$225,027,9120.8%17%New Hampshire1,447.000.2%$164,580,3860.5%19%Puerto Rico1,298.000.2%$41,889,8220.1%70%West Virginia908.000.1%$246,574,8510.8%31%Maine875.000.1%$145,763,8120.5%36%Vermont816.000.1%$54,457,8700.

  • FAQs on Prescription Drug Importation

    Issue Brief

    These FAQs address questions related to prescription drug importation, including the current status of importation proposals, details of Florida’s importation program recently authorized by the FDA, and concerns and challenges with this approach.

  • Questions about Prescription Drug Importation? KFF Has Answers

    News Release

    With lowering prescription drug costs a top priority for Americans, the Trump Administration, presidential candidates, members of Congress, and several states are proposing to allow the importation of drugs from abroad, chiefly Canada.