The Peterson-KFF Health System Tracker provides clear, up-to-date information on trends, drivers and issues that impact the performance of the system. It also illustrates how the U.S. is performing relative to other countries and how different parts of the system are performing relative to one another. A partnership of the Peterson Center on Healthcare and the KFF, the Tracker’s work goal places a heavy emphasis on data and evidence, addressing key questions through collections of charts, which provide data with additional context and synthesis of the latest research and developments. The Tracker also provide regular insight briefs for a more in-depth look at topical questions.
Featured Peterson-KFF Resources

The Burden of Medical Debt in the United States
This analysis uses government data to examine the burden of medical debt, including variations based on age, race and ethnicity, and health status . It estimates 9% of adults – or roughly 23 million people -owe medical debt, including 11 million who owe more than $2,000.
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Related Peterson-KFF Resources
- COVID-19 preventable mortality
- Many households do not have enough money to pay cost-sharing typical in private health plans
- Unvaccinated COVID patients cost the U.S. health system billions of dollars
- Most private insurers are no longer waiving cost-sharing for COVID-19 treatment
- Few Adults Are Aware of Hospital Price Transparency Requirements
- Surprise Bills Vary by Diagnosis and Type of Admission
- Overall inflation has not yet flowed through to the health sector
- How does the quality of the U.S. health care system compare to other countries?
- Health System Dashboard

National Health Spending Explorer
The Health Spending Explorer on the Peterson-KFF Health System Tracker helps users examine five decades worth of numbers documenting expenditures by federal and local governments, private insurers, and individuals on 15 categories of health services, including hospitals, physician and clinic care, and prescription drugs.
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Analysis: Half of Emergency Ambulance Rides Lead to Out-of-Network Bills for Privately Insured Patients
About half of emergency ground ambulance rides result in an out-of-network charge for people with private health insurance, potentially leaving patients at risk of getting a surprise bill, a new KFF analysis for the Peterson-KFF Health System Tracker finds. Congress last year enacted the “No Surprises Act,” which prohibits most…
News Release Read MoreGround Ambulance Rides and Potential for Surprise Billing
This analysis for the Peterson-KFF Health System Tracker finds that half of emergency ground ambulance rides result in an out-of-network charge for people with private health insurance, potentially leaving patients at risk of getting a surprise bill.
Issue Brief Read MoreAnalysis: Hospital Price Transparency Data Lacks Standardization, Limiting Its Use to Insurers, Employers, and Consumers
In spite of a new price transparency rule that requires hospitals to publish the prices of common health services, comparing prices across hospitals remains challenging due to limited compliance with the law and a lack of standardization in the available data, a new KFF analysis finds. The federal rule, which…
News Release Read MoreEarly Results from Federal Price Transparency Rule Show Difficultly in Estimating the Cost of Care
A new issue brief examines compliance with a new federal price transparency rule and variation in payer-negotiated rates at U.S. hospitals. The analysis looks at the websites of the two largest hospitals in each state and the District of Columbia, and finds that a lack of consistency in the data…
Issue Brief Read MoreCOVID-19 Pandemic-Related Excess Mortality and Potential Years of Life Lost in the U.S. and Peer Countries
A new issue brief reviews excess death rates in the U.S. and peer countries by age groups to examine how the pandemic has affected excess mortality rate among younger people. The analysis looks specifically at the excess deaths that arose in 2020 to examine how the age at death during…
Issue Brief Read MoreCompared to Peer Countries, the U.S. Had the Highest Rate of Mortality Among People Under Age 65 and Potential Years of Life Lost in 2020 Due to the Pandemic
A new KFF issue brief examines 2020 data on excess mortality – the number of deaths above what is expected in a typical year – and finds that among similarly large and wealthy nations, the United States had the highest premature excess mortality rate in 2020, indicating that younger people…
News Release Read MoreHow Have Health Care Utilization and Spending Changed So Far During the Coronavirus Pandemic?
This chart collection summarizes what is known so far about how health costs and utilization have changed during the COVID-19 pandemic. Health spending is on track to be somewhat lower in 2020 than in 2019 – the first time that’s happened since the government started tracking it.
Issue Brief Read MoreCOVID-19 is the Number One Cause of Death in the U.S. in Early 2021
A updated issue brief examines the most recent data on deaths from COVID-19 and other causes, and finds that COVID-19 is currently the number one cause of death in the United States. As of February 20, 2021, an average of more than 2,400 people per day died of COVID-19 in…
Issue Brief Read MoreWhere Do Americans Get Vaccines and How Much Does It Cost to Administer Them?
A new issue brief shows where Americans typically get flu vaccines in the U.S. and how much it costs to administer flu and other vaccines. Among the analysis’ findings: while most people get flu vaccines at a doctor’s office or retail health clinic, White people are more likely than Black,…
Issue Brief Read MoreAnalysis Examines the Implications of Price Transparency for Providers and Patients as New Rules Go into Effect
A new KFF analysis examines how new federal rules on price transparency for health services may affect patient decision-making and market pricing. As of January 1, 2021, the United States Department of Health and Human Services requires that hospitals publish payer-negotiated rates for common services on their websites. A second…
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