
Jennifer Mendoza
Research expert covering health, pharma and medtech

Detailed statistics
Number of ACA-related enrollments in the U.S. 2014-2024

Detailed statistics
Percentage of U.S. Americans with any health insurance 1990-2024

Detailed statistics
Total Medicaid enrollment 1966-2024

Number of people in the U.S. without health insurance 1997-2024
Number of people without health insurance in the United States from 1997 to 2024 (in millions)

Percentage of people in the U.S. without health insurance 1997-2024
Percentage of people without health insurance in the United States from 1997 to 2024

Percentage of U.S. Americans with any health insurance 1990-2024
Percentage of people with any health insurance in the United States from 1990 to 2024

Share of people in the U.S. without health insurance by age 1997-2024
Share of people without health insurance in the United States from 1997 to 2024, by age

Share of U.S. adults without health insurance by poverty level 2019-2024
Share of adults aged 18-64 years without health insurance in the United States from 2019 to 2024, by family income as a percentage of FPL

Share of U.S. adults without health insurance by Medicaid expansion status 2010-2024
Share of adults aged 18-64 years without health insurance in the United States from 2010 to 2024, by state Medicaid expansion status

U.S. adults with public health insurance by Medicaid expansion status 2010-2024
Share of adults aged 18-64 years with public health insurance in the United States from 2010 to 2024, by state Medicaid expansion status

U.S. adults with private health insurance by Medicaid expansion status 2010-2024
Share of adults aged 18-64 years with private health insurance in the United States from 2010 to 2024, by state Medicaid expansion status

Uninsured U.S. children distribution and rate by Medicaid expansion status 2020
Distribution and rate of children without health insurance in the U.S. in 2020, by state Medicaid expansion status

Medicaid income eligibility limits as % FPL as of Jan 2024, by state expansion status
Median Medicaid income eligibility limits for children and adults as a percent of the Federal Poverty Level (FPL) as of May 1, 2024, by state expansion status

Number of uninsured U.S. adults in the Medicaid coverage gap in 2021
Number of non-elderly uninsured adults in non-expansion states who would be eligible for Medicaid if their states expanded Medicaid as of 2021 (in thousands)

Distribution of U.S. adults in the Medicaid coverage gap in 2021, by state
Distribution of adults in the Medicaid coverage gap in the United States in 2021, by state

Number of uninsured U.S. adults in the Medicaid coverage gap in 2021, by state
Number of non-elderly uninsured adults in non-expansion states who would be eligible for Medicaid if their states expanded coverage as of 2021, by state and current eligibility

Number of U.S. people in the 'family glitch' in 2019, by select demographics
Number of dependents that fall in the 'family glitch' in the U.S. in 2019, by insurance coverage, income, gender, and age (in thousands)

Share of U.S. people in the 'family glitch' in 2019, by select demographics
Percentage of dependents that fall in the 'family glitch' in the U.S. in 2019, by insurance coverage, income, gender, and age

American Rescue Plan removes ACA subsidy cliff for two years starting 2021
ACA subsidy cliff: health insurance premiums as percent of income among U.S. adults of 60 years with average Silver Plan under the ACA vs COVID-19 Relief Law in 2021

Number of studies that find positive effects of Medicaid expansion as of 2021
Number of studies on the effects of ACA Medicaid expansion on select outcomes in the U.S. published between Jan. 2014 and Mar. 2021, by study finding

Number of ACA-related enrollments in the U.S. 2014-2024
Number of Affordable Care Act-related (ACA) enrollments in the Marketplace, Medicaid, and the Basic Health Program (BHP) in the U.S. from 2014 to 2024

Impact of Medicaid expansion on mortality in the U.S. 2014-2017
Cumulative impact of Medicaid expansion on mortality among older adults in the U.S. from 2014 to 2017

Impact of Medicaid expansion on mortality in the U.S. 2014-2017, by state
Cumulative impact of Medicaid expansion on mortality among older adults in the U.S. from 2014 to 2017, by state

Traditional Medicaid savings from Medicaid expansion in select U.S. states as of 2020
Estimated savings to traditional Medicaid from Medicaid expansion for select U.S. states and years, as of 2020

Number of ACOs in Medicare Shared Savings Program 2012-2025
Number of Accountable Care Organizations (ACOs) participating in the Medicare Shared Savings Program in the United States from 2012/2013 to 2025

Number of beneficiaries assigned to ACOs in Medicare Shared Savings Program 2012-2025
Number of beneficiaries assigned to Accountable Care Organizations (ACOs) participating in the Medicare Shared Savings Program in the United States from 2012/2013 to 2025 (in millions)

Number of ACO participants in Medicare Shared Savings Program 2025
Number of Accountable Care Organization (ACO) participants in the Medicare Shared Savings Program (MSSP) in the U.S. as of January 2025

Earned savings of ACOs in Medicare Shared Savings Program 2012-2021
Total earned shared savings of Accountable Care Organizations (ACOs) in the Medicare Shared Savings Program (MSSP) in the U.S. from 2012 to 2021 (in million U.S. dollars)

Gross federal savings from ACOs in Medicare Shared Savings Program 2013-2023
Gross federal savings from Accountable Care Organizations (ACOs) in the Medicare Shared Savings Program (MSSP) in the U.S. from 2013 to 2023 (in million U.S. dollars)

Overall quality scores of ACOs in Medicare Shared Savings Program 2012-2021
Average overall quality score of Accountable Care Organizations (ACOs) in the Medicare Shared Savings Program (MSSP) in the U.S. from 2012 to 2021

Number of U.S. hospitals Medicare punished for high readmissions in FY 2023
Number of hospitals in the United States that Medicare punished in FY 2023 for high readmission

Number of U.S. hospitals Medicare punished for high readmissions FY2022, by years
Number of acute-care hospitals in the United States that Medicare punished for high readmission as of FY2022, by the number of years punished

Number of U.S. hospitals Medicare punished for high readmissions FY 2015-2023
Number of hospitals in the United States that Medicare punished for high readmission from FY2015 to FY2023

U.S. hospitals Medicare punished for high hospital-acquired conditions FY 2015-2022
Number of hospitals in the United States that Medicare punished for high rates of hospital-acquired conditions (HAC) from FY2015 to FY2022

U.S. opinion on the ACA April 2010-March 2023
Percentage of public with favorable or unfavorable opinion of the Affordable Care Act (ACA) from April 2010 to March 2023

Share of U.S. adults who approved or disapproved of ACA in 2020, by party
Percentage of U.S. adults who approved or disapproved of the Affordable Care Act (ACA) and said whether changes were needed in 2020, by party identification

U.S. public opinion: overturning ACA/Obamacare 2020, by party
Public support and opposition for overturning the Affordable Care Act (ACA/Obamacare) in the U.S. in 2020, by party affiliation

U.S. public opinion: overturning ACA's pre-existing condition protection 2020
Public support and opposition for overturning the Affordable Care Act's (ACA's) protections for people with pre-existing conditions in the U.S. in 2020, by party affiliation

Public opinion on intentions of health care plans U.S. January 2020
Opinion on cost and coverage goals of Medicare-for-all, public option, and the Affordable Care Act as of January 2020
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