The independent source for health policy research, polling, and news.
KFF’s policy research provides facts and analysis on a wide range of policy issues and public programs.
KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the organization’s core operating programs.
A new KFF animation explains how rebates for prescription drugs work, including how they are determined, who benefits from them, how they affect spending by insurers and consumers and the role of pharmacy benefit managers in the process.
This animation explains how rebates for prescription drugs work and why they matter in the debate about lowering drug costs. The video breaks down how prescription drug rebates are determined, who benefits from them, how they affect spending by insurers and consumers and the role of pharmacy benefit managers in the process.
The Medicare Part D prescription drug benefit has helped improve the affordability of medications for people with Medicare. Yet Part D enrollees can face relatively high out-of-pocket costs because the Part D benefit does not have a hard cap on out-of-pocket spending. This analysis presents the latest data on out-of-pocket drug spending among Medicare Part D enrollees without low-income subsidies who have costs above the catastrophic coverage threshold.
The analysis examines enrollment in Medicare Advantage plans during beneficiaries’ first year on Medicare and finds that less than one-third or 29% enrolled in these private health plans, including HMOs or PPOs. The majority of people new to Medicare are choosing traditional Medicare in the year they first go on Medicare. The study looks at how these findings vary across age, Medicaid status, states, and counties.
The Medicare Part D program provides an outpatient prescription drug benefit to older adults and people with long-term disabilities in Medicare who enroll in private plans. This analysis provides the latest data about Medicare Part D coverage and costs in 2019 and trends over time, including enrollment, premiums, cost sharing, and participation in the low-income subsidy program.
As policymakers debate how to address the high cost of prescription drugs, a new KFF analysis compares data on prescription drug spending and use across large employer plans, Medicare Part D and Medicaid, and provides context for policy discussions about different approaches to curb rising drug costs that would affect people covered by each of…
Prescription drug costs are a pressing concern for both consumers and policymakers. This analysis compares prescription drug spending and use in large private employer plans, Medicare Part D, and Medicaid, based primarily on claims data by payer, which does not account for rebates.
The analysis finds that people who switched from traditional Medicare to Medicare Advantage in 2016 had health spending in 2015 that was $1,253 less, on average, than the average spending for beneficiaries who remained in traditional Medicare (after adjusting for health risk). The findings suggest that the current payment method may systematically overestimate expected costs of Medicare Advantage enrollees. Adjusting payments to reflect Medicare Advantage enrollees’ prior use of health services could potentially lower total Medicare spending by billions of dollars over a decade.
Out-of-pocket insulin costs for Medicare Part D enrollees with incomes too high to qualify for low-income subsidies increased 81% from 2007 to 2016. Learn more in the latest Chart of the Week.
Medicare Part D spending on insulin increased 840 percent between 2007 and 2017, far outpacing growth in the number of beneficiaries using insulin therapy, according to a new KFF analysis.
© 2025 KFF