Background
Obamacare (the Affordable Care Act) was signed into law in March 2010. Research articles published prior to January 20, 2017, are archived on this page for historical interest only. Their conclusions and recommendations may not reflect the official position of the U.S. Department of Health & Human Services today, especially with respect to the consequences of Obamacare.
Publications
2017
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Medicaid Expansion Impacts on Insurance Coverage and Access to Care
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Evidence Indicates a Range of Challenges for Puerto Rico Health Care System
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Nearly 900,000 Puerto Ricans May Lose Health Coverage When Medicaid Funds Run Out
2016
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Health Insurance Marketplace Cost Sharing Reduction Subsidies by Zip Code and County 2016
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Health Plan Choice and Premiums in the 2017 Health Insurance Marketplace
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Health Insurance Marketplace Enrollment Projections for 2017
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People Who Currently Buy Individual Market Coverage Could Be Eligible for ACA Subsidies
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Affordable Care Act Has Led to Historic, Widespread Increase in Health Insurance Coverage
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The Effect of Shopping and Premium Tax Credits on the Affordability of Marketplace Coverage
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Impacts Of The Affordable Care Act's Medicaid Expansion On Insurance Coverage And Access To Care
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Impact of the Affordable Care Act Coverage Expansion on Rural and Urban Populations.
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Marketplace Premiums after Shopping, Switching, and Premium Tax Credits, 2015-2016
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Plan Selections by ZIP Code and County in the Health Insurance Marketplace: March 2016
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Health Insurance Coverage and the Affordable Care Act, 2010-2016
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Plan Selections by ZIP Code in the Health Insurance Marketplace January 2016
2015
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Health Plan Choice and Premiums in the 2016 Health Insurance Marketplace
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Consumer Decisions Regarding Health Plan Choices, in the 2014 and 2015 Marketplaces
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How Many Individuals Might Have Marketplace Coverage at the End of 2016?
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Health Insurance Marketplace: Uninsured Populations Eligible to Enroll for 2016
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Plan Selections by County in the Health Insurance Marketplace (UPDATED)
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Outreach and Enrollment for LGBT Individuals: Promising Practices from the Field
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Plan Selections by ZIP Code in the Health Insurance Marketplace
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The Economic Impacts of Medicaid Expansion, Uncompensated Care Costs and the Affordable Care Act
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Medicaid Enrollment and the Affordable Care Act (PDF-1 Page)
Health Insurance Marketplace 2015 Open Enrollment Period: March Enrollment Report (PDF-73 pages)
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Health Insurance Marketplace 2015 Open Enrollment Period: January Enrollment Report (PDF-44 Pages)
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2015 Plan Selections by ZIP Code in the Health Insurance Marketplace
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The Affordable Care Act: Advancing the Health of Women and Children (PDF-7 Pages)
2014
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Health Insurance Marketplace 2015 Open Enrollment Period: December Enrollment Report (PDF-33 Pages)
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Health Plan Choice and Premiums in the 2015 Health Insurance Marketplace (PDF-24 Pages)
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Survey Data on Health Insurance Coverage for 2013 and 2014 (PDF-15 Pages)
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Impact of Insurance Expansion on Hospital Uncompensated Care Costs (PDF-26 Pages)
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Rate Review Annual Report for Calendar Year 2013 (PDF-9 Pages)
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Plan Selections by ZIP Code in the Health Insurance Marketplace
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Effects of Implementing State Insurance Market Reform, 2011-2012 (PDF-71 Pages)
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Trends in Premiums in the Small Group and Individual Insurance Markets, 2008-2011 (PDF-84 Pages)
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Health Insurance Marketplace: Summary Enrollment Report (PDF-45 Pages)
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Addendum to the Health Insurance Marketplace: March Enrollment Report
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Second Addendum to the Health Insurance Marketplace Summary Enrollment Report
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Health Insurance Marketplace: Summary Enrollment Report Infographic
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Health Insurance Marketplace: Summary Enrollment Report: State Profile
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The Eligible Uninsured in Texas: 6 in 10 Could Receive Health Insurance Marketplace Tax Credits, Medicaid or CHIP (PDF Version, 6 pages)
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ASPE/OMH Research Brief - Eligible Uninsured Asian Americans, Native Hawaiians, and Pacific Islanders: 8 in 10 Could Receive Health Insurance Marketplace Tax Credits,Medicaid or CHIP (PDF Version, 12 pages)
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Common Sports Injuries: Incidence and Average Charges, (PDF Version, 5 pages)
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Addendum to the Health Insurance Marketplace: March Enrollment Report (PDF-28 Pages)
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Health Insurance Marketplace: February 2014 Enrollment Report (PDF-53 Pages)
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Children’s Health Coverage on the 5th Anniversary of CHIPRA (PDF-5 Pages)
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Health Insurance Marketplace: January 2014 Enrollment Report (PDF-29 Pages)
2013
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Health Insurance Marketplace: December Enrollment Report (PDF-15 Pages)
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Health Insurance Marketplace: November Enrollment Report (PDF-28 Pages)
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Health Insurance Marketplace Premiums for 2014 (PDF-15 Pages)
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Market Competition Works: Proposed Silver Premiums in the 2014 Individual Market Are Substantially Lower than Expected (PDF Version, 6 pages)
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Market Competition Works: Proposed Silver Premiums in the 2014 Individual and Small Group Markets Are Nearly 20% Lower than Expected, (PDF Version, 12 pages)
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Seventy-one million additional Americans are receiving preventive services coverage without cost-sharing under the Affordable Care Act, (PDF Version, 4 pages)
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Modified Adjusted Gross Income (MAGI) Income Conversion Methodologies (PDF-49 Pages)
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Health Insurance Premium Increases in the Individual Market Since the Passage of the Affordable Care Act (PDF Version, 8 pages)
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Affordable Care Act Expands Mental Health and Substance Use Disorder Benefits and Federal Parity Protections for 62 Million Americans, (PDF Version, 4 pages)
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Growth in Medicare Spending per Beneficiary Continues to Hit Historic Lows (PDF Version, 6 pages)
2012
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Estimated Savings of $5,000 to Each Medicare Beneficiary from Enactment Through 2022 Under the Affordable Care Act (PDF Version, 5 pages)
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Number of Young Adults Gaining Insurance Due to the Affordable Care Act Now Tops 3 Million (PDF version, 2 pages)
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The Affordable Care Act and Asian Americans and Pacific Islanders (PDF version, 8 pages)
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The Affordable Care Act and African Americans (PDF version, 6 pages)
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The Affordable Care Act and Latinos (PDF version, 7 pages).
En español (PDF-7 Páginas) -
Uninsured Young Adults and the Affordable Care Act (PDF-2 Pages)
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The Affordable Care Act and Women (PDF version, 2 pages)
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The Affordable Care Act and Participation Rates in Medicaid (PDF-7 Pages)
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Expanded Insurance Coverage For Young Adults of All Races and Ethnicities (PDF-2 Pages)
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105 Million Americans No Longer Face Lifetime Limits on Health Benefits (PDF version, 6 pages)
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ACA and Preventive Services Coverage Without Cost-Sharing (PDF-4 Pages)
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The Cost of Covering Contraceptives through Health Insurance
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Medicare Beneficiary Savings and the Affordable Care Act (PDF Version, 4 pages)
2011
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At Risk: Pre-Existing Conditions Could Affect 1 in 2 Americans (PDF version, 10 pages)
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Essential Health Benefits: Individual Market Coverage (PDF version, 2 pages)
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Variation and Trends in Medigap Premiums (PDF version, 38 pages)
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2.5 Million Young Adults Gain Health Insurance Due to the Affordable Care Act (PDF version, 2 pages)
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Actuarial Value and Employer-Sponsored Insurance (PDF version, 12 pages)
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One Million Young Adults Gain Health Insurance in 2011 Because of the Affordable Care Act (PDF version, 3 pages)
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Overview of the Uninsured in the United States (PDF version, 5 pages)