Enrollment - Research and Data from KFF

Analyzing Changes in Medicare Part D Enrollment for 2026

Mar 3, 2026

Issue Brief

The Medicare Part D prescription drug benefit is provided by private plans, either Medicare Advantage plans that offer drug coverage (MA-PDs) or, for those in traditional Medicare, stand-alone prescription drug plans (PDPs). New data from CMS shows that 56 million people are enrolled in Part D plans as of February 2026, with more in MA-PDs than PDPs, reflecting higher overall enrollment in Medicare Advantage than in traditional Medicare. Enrollment in group MA-PD plans decreased while…

Medicaid and CHIP Eligibility, Enrollment, and Renewal Policies as States Resume Routine Operations

Apr 1, 2025

Report

A KFF survey of state Medicaid officials examines state Medicaid and CHIP eligibility, enrollment, and renewal policies in place as of January 2025 as states return to routine operations following the unwinding of the continuous enrollment provision. The survey finds that states have broadly adopted policy and system changes to automate and improve the accuracy and efficiency of Medicaid enrollment and renewal processes and provides a baseline of state policies ahead of potential changes to…

Senate Finance Language Would Further Cut Federal Spending for Medicaid Expansion States

Jun 20, 2025

Policy Watch

Prior KFF analysis allocated CBO’s federal Medicaid spending reductions and enrollment losses across the states, and this policy watch builds on that analysis to examine the potential impacts in expansion states compared with non-expansion states.

Affordable Care Act Marketplace and Medicaid Expansion Enrollment Reached a Combined 44 Million in 2024

Jan 15, 2025

News Release

A new KFF analysis finds that there were 44 million people enrolled in health coverage through the Affordable Care Act’s Marketplaces and its expansion of the Medicaid program in 2024. That represents about 1 in every 6 people under age 65, or 16.4%. There was significant variation in ACA enrollment across states, ranging from about 1 in 4 nonelderly people in Louisiana, Oregon, Florida, and New York to fewer than 1 in 10 in…

A Look at Medicaid Enrollment and Finances of the Five Largest Medicaid Managed Care Plans

Feb 4, 2025

Issue Brief

This brief examines enrollment and financial data through the end of September 2024 from quarterly company earnings reports and calls, financial filings, and other company materials as well as from national administrative data.

Capping Per Enrollee Spending Could Reduce Federal Medicaid Expenditures by $532 billion to Nearly $1 Trillion Over 10 Years Depending on How States Respond and Result in as Many as 15 Million People Losing Medicaid Coverage by 2034

Feb 26, 2025

News Release

As Congress considers ways to cut Medicaid spending to help finance the extension of federal tax cuts, a new KFF analysis finds that imposing a cap on federal spending per Medicaid enrollee—known as a “per capita cap”—could trigger a decrease in federal Medicaid spending over a 10-year period of $532 billion to almost $1 trillion, depending on how states respond to the cuts. An estimated 15 million people could lose Medicaid coverage by 2034, if…

Key Facts About Medigap Enrollment and Premiums for Medicare Beneficiaries

Oct 18, 2024

Issue Brief

This brief presents facts about Medigap, including the characteristics of Medicare beneficiaries with a Medigap policy, variation in Medigap enrollment by state, and Medigap premiums.

Medicaid and CHIP Eligibility, Enrollment, and Renewal Policies as States Prepare for Major Medicaid Policy Changes

Apr 30, 2026

Report

The 24th annual survey of state Medicaid and CHIP program officials conducted by KFF and the Georgetown University Center for Children and Families (CCF) provides a baseline of state Medicaid and CHIP eligibility, enrollment, and renewal policies in place as of January 2026 as they prepare to implement the changes included in the 2025 reconciliation law.

Medicare Beneficiaries by Type of Entitlement With and Without End-Stage-Renal Disease (ESRD)

Aug 8, 2025

State Health Facts Indicator

Quick Take: Medicaid: 3 Key Issues to Watch in 2013

Feb 22, 2013

Fact Sheet

2013 will be a historic year for Medicaid with the implementation of major provisions to expand coverage and streamline enrollment in the Affordable Care Act (ACA) less than a year away, a surge in activity around care delivery reforms that seek to improve care and potentially reduce costs, and the unfolding of fiscal developments at the state and federal level. Today, Medicaid provides health and long-term care coverage to more than 60 million low-income children,…

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