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Prescription Drugs

Recent Trends in GLP-1 Use and Spending in Medicare

New data from the Centers for Medicare & Medicaid Services shows that use of and spending for GLP-1 drugs under Medicare grew substantially between 2019 and 2024. Medicare covers GLP-1 drugs for diabetes, cardiovascular disease, and sleep apnea, but current law prohibits Medicare from covering drugs for weight loss.

FAQs About the IRA's Medicare Drug Price Negotiation Program

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

New & Noteworthy

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

The top three pharmacy benefit managers (PBMs) manage 79% of prescription drug claims on behalf of 270 million people. We look at the role PBMs play in influencing drug costs and access to medicines, as well as efforts to regulate them.

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 Insurers Made Nearly 53 Million Prior Authorization Determinations in 2024

Medicare Advantage insurers made nearly 53 million prior authorization determinations in 2024, up from 49.8 million in 2023. They fully or partially denied 4.1 million, or 7.7%, of the prior authorization requests they received. Just 11.5% of all denials were appealed, but in the vast majority of those cases (80.7%) the initial denial was overturned.

Prior authorization determinations represent requests for approval that providers must submit before providing a service. Lawmakers of both major political parties have pressed insurers on their prior authorization practices, which consumers say unfairly erect barriers to needed care.

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

1 in 6 Medicare Advantage Enrollees Had a Diagnosis Added on a Chart Review That Increased Federal Payments to their Insurer

Medicare Advantage 2026 Spotlight: A First Look at Plan Offerings

Medicare Part D

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

This analysis finds that monthly premiums for many Part D stand-alone prescription drug plans (PDPs) in a number of states will be lower in 2026 than they were this year. At the same time, the total number of PDPs, which provide prescription drug coverage to people in traditional Medicare, will fall for the third year in a row, as insurers continue to scale back their offerings and adjust to higher costs under the redesigned Part D benefit, reflecting changes in the Inflation Reduction Act.

The Uncertain Future of Medicare's Stand-Alone PDP Market and Why It Matters

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

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 in Its Ninth Year: The 2014 Marketplace and Key Trends, 2006-2014

    Report

    This report presents findings from an analysis of the Medicare Part D marketplace in 2014 and changes in features of the drug benefit offered by Part D plans since 2006. It examines the latest information and trends related to Part D enrollment and plan availability, premiums, benefit design and cost sharing, pharmacy networks, the Low-Income Subsidy Program, and plan performance ratings.

  • Total Medicare Advantage Enrollment, 1992-2014

    Feature

    Total Medicare Advantage Enrollment, 1992-2014 Download Source MPR/Kaiser Family Foundation analysis of CMS Medicare Advantage enrollment files, 2008-2014, and MPR, “Tracking Medicare Health and Prescription Drug Plans Monthly Report,” 2001-2007.  Report of the Medicare Board of Trustees, 2002.

  • 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.

  • Old and Poor: America’s Forgotten

    Video

    While the Census Bureau’s official poverty measure shows 9 percent of seniors nationally live in poverty, the share climbs to about one in seven seniors (15 percent) under the Bureau’s alternative Supplemental Poverty Measure, which takes into account out-of-pocket health expenses and geographic differences in the cost of living. Produced by the Kaiser Family Foundation, Old and Poor: America's Forgotten provides a portrait of seniors who are living in poverty, in both urban and rural areas across the United States.

  • 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.

  • Summary of the Affordable Care Act

    Fact Sheet

    This document summarizes the comprehensive 2010 health reform law, often called the Affordable Care Act or ACA, including changes made to it by subsequent legislation, with a focus on provisions to expand coverage, control costs, and improve delivery systems.

  • Standard Medicare Prescription Drug Benefit, 2013

    Feature

    Standard Medicare Prescription Drug Benefit, 2013 Download Source Kaiser Family Foundation illustration based on CMS standard benefit parameter update for 2013.  Amounts rounded to nearest dollar.

  • Solvency Projections of the Medicare Part A Trust Fund, 1970-2013

    Feature

    Solvency Projections of the Medicare Part A Trust Fund, 1970-2013 Download Source Intermediate projections from 1970-2013 Annual Reports of the Boards of Trustees of the Federal Hospital Insurance and Federal Supplementary Medical Insurance Trust Funds.