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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

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

The Inflation Reduction Act, which requires the federal government to negotiate the price of some drugs in Medicare, also requires all Part D plans to cover each of the drugs selected for price negotiation when negotiated prices take effect.

Recent Trends in GLP-1 Use and Spending in Medicare

A Current Snapshot of the Medicare Part D Prescription Drug Benefit

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

President Trump Proposes Codifying MFN Drug Pricing Deals But Key Details Are Missing

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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  • Medicare Part D: A First Look at Medicare Drug Plans in 2023

    Issue Brief

    This issue brief provides an overview of the Medicare Part D marketplace in 2023 and key trends over time, focusing primarily on stand-alone Medicare drug plans, including plan availability, premiums, and cost sharing. The brief also describes the prescription drug provisions in the Inflation Reduction Act of 2022 that affect the Medicare Part D marketplace beginning in 2023

  • Amid the COVID-19 Pandemic, Medicare Spending on Skilled Nursing Facilities Increased More than 4% Despite an Overall Decline in Utilization

    Issue Brief

    Medicare spending for skilled nursing facilities increased in 2020 despite an overall decrease in the number of Medicare beneficiaries using SNF services. The higher spending is explained by longer and more expensive SNF stays in 2020 compared to 2019, both of which increased more sharply for Medicare beneficiaries under the age of 65 than for older Medicare SNF users.

  • Summary of Medicare Provisions in the President’s Budget for Fiscal Year 2015

    Issue Brief

    On March 4, 2014, the Office of Management and Budget released President Obama’s budget for fiscal year (FY) 2015, which includes provisions related to federal spending and revenues, including Medicare savings. The President’s budget would use federal savings and revenues to reduce the federal debt and replace sequestration of Medicare and other federal programs for 2015 through 2024. This brief summarizes the Medicare provisions included in the President’s budget proposal for FY 2015.

  • Adding an Out-of-Pocket Spending Maximum to Medicare: Implementation Issues and Challenges

    Issue Brief

    In an effort to simplify Medicare’s cost-sharing requirements, provide beneficiaries with catastrophic protection, and achieve program savings, some have proposed to restructure Medicare’s benefit design. Several recent proposals would create a unified deductible for Medicare Parts A and B, simplify cost-sharing requirements above the deductible, and add an annual limit on beneficiary out-of-pocket spending—a benefit feature typical of larger employer plans, but lacking in traditional Medicare. This issue brief describes the options for adding an out-of-pocket spending limit to Medicare and examines the operational issues that could arise in implementing both a uniform and an income-based out-of-pocket spending limit. Because the implementation of an income-related out-of-pocket maximum would pose somewhat greater complexity for Medicare, the operational issues associated with this approach are discussed in greater detail.

  • The Medicare Part D Coverage Gap: Costs and Consequences in 2007

    Report

    This study quantifies the number of Medicare Part D plan enrollees in 2007 who reached a gap in their prescription drug coverage known as the “doughnut hole,” as well as the changes in beneficiaries’ use of medications and out-of-pocket spending after they reached that gap.

  • Medicare Advantage 2014 Spotlight: Enrollment Market Update

    Issue Brief

    This Data Spotlight provides an overview of Medicare Advantage enrollment patterns in March 2014, and examines variations by plan type, state, and firm. It also analyzes trends in premiums paid by beneficiaries enrolled in Medicare Advantage plans and describes the changes in limits on out-of-pocket expenses and prescription drug coverage in the Part D “donut hole” provided by the plans in 2014.

  • KFF Health Tracking Poll – February 2019: Prescription Drugs

    Feature

    With increased national attention towards prescription drug costs, this poll examines the public’s experiences with prescription medicine and their views on current policy proposals brought forth by congressional lawmakers and the Trump administration, including international reference pricing, transparency in drug advertisements, and negotiations with drug companies. The survey also dives into the attitudes and experiences of adults, 65 and older – a group that is more likely to report taking prescription medication and shopped for prescription drug coverage.

  • The Out-of-Pocket Cost Burden for Specialty Drugs in Medicare Part D in 2019

    Issue Brief

    Medicare Part D has helped to make prescription drugs more affordable for people with Medicare, yet many beneficiaries continue to face high out-of-pocket costs for their medications. Specialty tier drugs are a particular concern for Part D enrollees in this context. This analysis draws on data from Medicare’s Plan Finder website to calculate expected annual 2019 out-of-pocket costs for 30 specialty tier drugs used to treat four health conditions—cancer, hepatitis C, multiple sclerosis, and rheumatoid arthritis.