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Medicare Part D

Analyzing Changes in Medicare Part D Enrollment for 2026

Analysis of CMS data shows that 56.1 million people have Medicare Part D drug coverage as of Feb. 2026, with 56% of enrollees in Medicare Advantage plans with drug coverage (MA-PDs) and 44% in stand-alone prescription drug plans (PDPs.)PDP enrollment increased, mainly due to the rise in enrollment in group employer/union plans for retirees.

Between 2025 and 2026, enrollment in group Medicare Advantage drug plans dropped for the first time since 2010, while group PDP enrollment rose by the largest amount Since 2013.

Premiums Are Decreasing for Many Stand-Alone Part D Drug Plans in a Number of States in 2026

Stand-Alone Drug Plans Cover a Larger Share of Part D Enrollees Living in the Most Rural Areas Than Medicare Advantage Plans

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

Changes to Medicare Part D in 2024 and 2025 Under the Inflation Reduction Act and How Enrollees Will Benefit

New & Noteworthy
Examining the Potential Impact of Medicare’s New WISeR Model

A federal initiative to establish new prior authorization requirements in traditional Medicare, called the Wasteful and Inappropriate Service Reduction (WISeR) model, is likely to have only modest impact in its first year.

State Profiles for Dual-Eligible Individuals

This data collection draws on Medicare and Medicaid administrative data to present national and state-level information on people who are covered by both Medicare and Medicaid, referred to as dual-eligible individuals (also known as dually-enrolled beneficiaries).

Medicare Advantage

Medicare Advantage Enrollment Grew by About 1 Million People, Mainly Due to Special Needs Plans

Medicare Advantage enrollment rose to 35.1 million people as of Feb. 1, an increase of 1.1 million since February 2025. The 3% uptick belied Medicare Advantage insurers’ projections that overall enrollment would decline compared to 2025. It was the lowest annual percentage increase in two decades.
The latest increase was largely driven by rising enrollment in Medicare Advantage Special Needs Plans (SNPs), which accounted for 83% of enrollment gains in 2026. However, three of the five largest Medicare Advantage insurers, including market leader UnitedHealth Group, Inc., experienced overall Medicare Advantage enrollment declines.

How Medicare Pays Medicare Advantage Plans: Issues and Policy Options

Medicare Advantage Enrollees Have Access to About Half of the Physicians Available to Traditional Medicare Beneficiaries

Medicare Advantage Insurers Made Nearly 53 Million Prior Authorization Determinations in 2024

Medicare Advantage 2026 Spotlight: A First Look at Plan Offerings

Prescription Drugs

Recent Trends in GLP-1 Use and Spending in Medicare

Ahead of the Trump administration’s planned expansion of Medicare coverage for GLP-1s to treat obesity through temporary models and the availability of Medicare’s negotiated price for certain GLP-1 products beginning in 2027, new data from the Centers for Medicare & Medicaid Services (CMS) shows that use and spending for these drugs under Medicare has grown substantially in recent years.

Key Facts About Medicare Drug Price Negotiation

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

What to Know About Pharmacy Benefit Managers (PBMs) and Federal Efforts at Regulation

The IRA Has Improved Coverage of Drugs Selected for Medicare Price Negotiation

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 Open Enrollment

Beneficiaries Have 32 Medicare Advantage Prescription Drug Plans Available, on Average, for 2026

The average Medicare beneficiary will be able to choose among 32 Medicare Advantage plans with prescription drug coverage for 2026, two fewer than in 2025. The number of MA-PD options has grown steadily since 2010, peaking in 2024 when the average Medicare beneficiary had 36 options. Open enrollment runs October 15 through December 7.

Also: Medicare Open Enrollment FAQs

Premiums Are Decreasing for Many Stand-Alone Drug Plans in a Number of States in 2026

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

The Role of SHIPs in Helping People with Medicare Navigate Their Coverage

What to Know About the Medicare Open Enrollment Period and Medicare Coverage Options

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  • Inside Deficit Reduction: What it Means for Health Care

    Event Date:
    Event

    After much heated debate on the U.S. debt limit, the Budget Control Act of 2011 was passed on August 2, 2011, containing more than $900 billion in federal spending reductions over 10 years. The law also established the 12-person “super committee” charged with finding more than $1 trillion in additional savings.

  • Best Bets for Reducing Medicare Costs for Dual Eligible Beneficiaries: Assessing the Evidence

    Report

    With pressure mounting to slow the growth in federal health care spending, policymakers are exploring ways to reform the way care is delivered to the 9 million low-income Medicare beneficiaries who also receive Medicaid – a group that on average is sicker and frailer than other Medicare beneficiaries, and therefore receive significantly more care at…

  • Medicare Spending and Use of Medical Services for Beneficiaries in Nursing Homes and Other Long‐Term Care Facilities: A Potential for Achieving Medicare Savings and Improving the Quality of Care

    Report

    Medicare Spending and Use of Medical Services for Beneficiaries in Nursing Homes and Other Long‐Term Care Facilities: A Potential for Achieving Medicare Savings and Improving the Quality of Care This report documents the relatively high rates of hospital stays, emergency room visits and skilled nursing facility admissions among long-term care facility residents.

  • Medicare Part D Spending Trends: Understanding Key Drivers and the Role of Competition

    Issue Brief

    This brief commissioned by the Foundation examines factors that contributed to Medicare's lower-than-expected spending on prescription drugs under the Medicare Part D drug benefit that started in 2006. Since its launch, Medicare has spent about 30 percent less on Part D benefits than the Congressional Budget Office originally projected.

  • Medicare Advantage: How Robust Are Plans’ Physician Networks?

    Report

    This report takes an in-depth look at Medicare Advantage plans’ physician networks. The analysis draws upon data from 391 Medicare Advantage plans serving beneficiaries in 20 diverse counties in 2015. The report examines the size and composition of plans’ physician networks, the variation across counties, the inclusion of physicians by specialty, and the relationship between network size and other plan features, such as premiums and quality star ratings.

  • How are Seniors Choosing and Changing Health Insurance Plans?

    Report

    This report summarizes first-hand accounts of seniors’ Medicare private plan decision making strategies, based on focus groups conducted in four cities. Seniors found the initial plan selection process overwhelming due to the volume of information they received and their inability to organize it. Few used the government's online comparison tool, and those that did cite several shortcomings. Many relied on advice from sources they trust, including insurance agents, plan representatives, friends, family members, doctor's offices and pharmacists. After they enroll in a plan, many seniors did not revisit their initial decision or review plan options without the strong provocation of a substantial increase in cost, change in coverage, or shift in personal health care needs. Moreover, they feared that a change in plans may disrupt their care, or lead to an unforeseen increase in out-of-pocket costs, and require them to learn new rules and requirements. They are doubtful they would end up in a plan that is appreciatively different or better for them. Overall, seniors preferred to have numerous choices in plans but would like personalized help and advice from experts to ease the process.

  • Gaps in Medicare Advantage Data Remain Despite CMS Actions to Increase Transparency

    Issue Brief

    The Centers for Medicare and Medicaid Services has recently taken actions to increase transparency in Medicare Advantage, however substantial data gaps remain that limit the ability of policymakers and researchers to conduct oversight and assess the program's performance, and for Medicare beneficiaries to compare Medicare Advantage plans offered in their area.

  • What to Know About How Medicare Pays Physicians

    Issue Brief

    Each year, the Centers for Medicare & Medicaid Services (CMS) updates Medicare payments for physician services and other Part B services through rulemaking. This issue brief answers key questions about how physicians are paid under the Medicare program, and reviews policy options under discussion for payment reform.