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How Medicare Advantage Rebates Disadvantage Medicare’s Stand-Alone Drug Plan Market

Rebates that reduce Part D premiums for Medicare Advantage plans with drug coverage make it harder for stand-alone prescription drug plans (PDPs) to compete. That may contribute to instability in the PDP market relied on by people in traditional Medicare. The number of Part D stand-alone Rx drug plan options for the avg Medicare beneficiary has fallen by half in recent years, while Medicare Advantage drug plan options have risen.

Also: Medicare Part D Enrollment, Premiums, and Cost Sharing in 2026

Analyzing Changes in Medicare Part D Enrollment for 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 AND NOTEWORTHY

What to Know About Medicare Coverage of Telehealth

Congress has repeatedly extended pandemic-era flexibilities around Medicare coverage of telehealth, but most such flexibilities remain temporary. This brief answers key questions about the current scope of Medicare telehealth coverage, including both temporary and permanent changes adopted through legislation and regulation, and future policy considerations.

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 in 2026: Enrollment Update and Key Trends

More than half (55%) of eligible Medicare beneficiaries are enrolled in Medicare Advantage in 2026, continuing a decades-long shift toward private plans. Special Needs Plans have driven recent growth, with nearly 1 in 4 enrollees now in such plans.
To better understand trends in the growth of the Medicare Advantage program, this brief provides current information about enrollment, including by plan type and firm.

See Also: Medicare Advantage in 2026: Premiums, Out-of-Pocket Limits, Supplemental Benefits, and Prior Authorization

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 Out-of-Pocket Limits: Variation & Trends

Prescription Drugs

What to Know About the BALANCE Model for GLP-1s in Medicare and Medicaid and the Medicare GLP-1 Bridge

CMS's temporary program to cover GLP-1 drugs for obesity in Medicare, called the BALANCE model, will not launch as scheduled on January 1, 2027. Instead, CMS is extending the Medicare GLP-1 Bridge, a separate short-term program that was to run from July to December 2026. It will now run through the end of 2027.

Key Facts About Medicare Drug Price Negotiation

Recent Trends in GLP-1 Use and Spending in Medicare

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. u003cbru003eu003cbru003eExplore 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.u003cbru003eu003cbru003eu003ca href=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022 data-type=u0022linku0022 data-id=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022u003eRelated:u003ca href=u0022https://www.kff.org/medicare/issue-brief/faqs-on-medicare-financing-and-trust-fund-solvency/u0022u003e FAQs on Medicare Financing and Trust Fund Solvencyu003c/au003eu003c/au003e

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  • Comparison of Medicare Premium Support Proposals

    Issue Brief

    This brief provides a side-by-side comparison of recent proposals to transform Medicare into a premium support program and slow the future growth in Medicare spending. These proposals each would convert Medicare from a defined benefit program, in which beneficiaries are guaranteed coverage for a fixed set of benefits, to a defined contribution or "premium support" program, in which beneficiaries are provided a fixed federal payment to help cover their health care expenses. The brief compares…

  • Massachusetts and Ohio: Capitated Financial Alignment Demonstrations for Dual Eligible Beneficiaries Compared

    Fact Sheet

    The Centers for Medicare and Medicaid Services (CMS) has finalized memoranda of understanding (MOUs) with Massachusetts and Ohio to test a capitated financial alignment model to integrate care and align financing for people who are dually eligible for Medicare and Medicaid in 2013. CMS also has signed an MOU with Washington to test a managed fee-for-service model. These three year demonstrations will introduce changes in the care delivery systems through which beneficiaries presently receive services…

  • Policy Options to Sustain Medicare for the Future

    Report

    With Medicare expected to be a key part of Washington’s ongoing debate about solutions to reduce the federal budget and national debt, this report serves as a compendium of policy options that may be discussed in upcoming budget debates. The report presents a wide array of options in several areas and lays out the possible implications of these options for Medicare beneficiaries, health care providers, and others, as well as estimates of potential savings, when…

  • Public Opinion Polling on Raising the Age of Medicare Eligibility: Historic Trends and Current Nuances

    Poll Finding

    Given the recent debate over raising the age of Medicare eligibility, it is useful to understand public opinion on the issue. This Data Note analyzes KFF's historic trends and gives a current snapshot of public opinion on the proposal, with a special focus on how views differ by age, and the partisan divide that pervades public opinion on healthcare. The analysis then investigates how different arguments sway views on raising the age of Medicare eligibility…

  • Medicare Beneficiaries Without Supplemental Coverage Are at Risk for Out-of-Pocket Costs Relating to COVID-19 Treatment

    Policy Watch

    Most Medicare Advantage enrollees are in plans that have waived cost sharing for COVID-19 treatment, and many other beneficiaries in traditional Medicare have their cost sharing covered by supplemental insurance. This blog post discusses the 6 million Medicare beneficiaries without supplemental coverage who would face out-of-pocket costs if they require treatment for COVID-19.

  • 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…

  • How Much Could Medicare Beneficiaries Pay For a Hospital Stay Related to COVID-19?

    Issue Brief

    As the coronavirus continues to spread, the number of people on Medicare admitted to the hospital for COVID-19 related illness is expected to rise. We analyze how much Medicare beneficiaries could pay out-of-pocket for an inpatient hospital admission under traditional Medicare (assuming no supplemental coverage) or Medicare Advantage plans.

  • Millions of Medicare Part D Enrollees Face Increases in Premiums and Other Costs in 2020 if They Do Not Switch Plans During Open Enrollment 

    News Release

    Millions of current enrollees in stand-alone Medicare Part D prescription drug plans will face premium and other cost increases next year unless they switch to lower-cost plans during the open enrollment period that began Oct. 15 and ends on Dec. 7, a new KFF analysis finds. This includes two-thirds of Part D stand-alone drug plan enrollees not receiving low-income subsidies—nine million enrollees—who will face higher monthly premiums if they keep their current plan in 2020.…

  • Democrats Like Medicare-for-All, but Swing Voters Don’t

    From Drew Altman

    Medicare-for-all is popular with Democrats in battleground states, but not with swing voters. In this Axios column, Drew Altman discusses the implications of the KFF-Cook Political Report poll findings.