2026 J. Michael McWilliams: Social Sciences and Humanities Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Social Sciences and Humanities	45	3856	3556	1834	1660	146	9134

Overview

J. Michael McWilliams is affiliated with Brigham and Women's Hospital in the United States. Their research primarily focuses on healthcare policy, management, and economics, with significant contributions to understanding health systems, quality of care, and healthcare cost and practices.

Their scholarly work spans various topics, including:

Healthcare Policy and Management
Primary Care and Health Outcomes
Health Systems, Economic Evaluations, Quality of Life
Healthcare cost, quality, practices
Global Health Care Issues
Patient Satisfaction in Healthcare
Emergency and Acute Care Studies

McWilliams' research is situated within the broader fields of Economics, Econometrics and Finance, and Health Professions. In particular, their specialization extends into subfields such as Economics and Econometrics, General Health Professions, Emergency Medicine, Oncology, and Health.

Their prominent recent papers include:

"Changes in Quality of Care after Hospital Mergers and Acquisitions" (2020), published in New England Journal of Medicine
"Early Hospital Compliance With Federal Requirements for Price Transparency" (2021), published in JAMA Internal Medicine
"Organization and Performance of US Health Systems" (2023), published in JAMA
"Savings or Selection? Initial Spending Reductions in the Medicare Shared Savings Program and Considerations for Reform" (2020), published in Milbank Quarterly
"National Trends In ED Visits, Hospital Admissions, And Mortality For Medicare Patients During The COVID-19 Pandemic" (2021), published in Health Affairs

McWilliams has collaborated frequently with other researchers, including:

Bruce E. Landon
Michael E. Chernew
Peter B. Smulowitz
A. James O'Malley
Lawrence Zaborski

Their articles are regularly published in several key medical and health policy journals, with multiple contributions to:

JAMA Internal Medicine
Health Affairs
New England Journal of Medicine
The American Journal of Managed Care
JAMA Health Forum

Best Publications

Measuring Low-Value Care in Medicare

Aaron L. Schwartz;Bruce E. Landon;Bruce E. Landon;Adam G. Elshaug;Michael E. Chernew

532
Citations
Early Performance of Accountable Care Organizations in Medicare.

J Michael McWilliams;Laura A Hatfield;Michael E Chernew;Bruce E Landon

471
Citations
Differences in Control of Cardiovascular Disease and Diabetes by Race, Ethnicity, and Education: U.S. Trends From 1999 to 2006 and Effects of Medicare Coverage

J. Michael McWilliams;Ellen Meara;Alan M. Zaslavsky;John Z. Ayanian

447
Citations
Health Consequences of Uninsurance among Adults in the United States: Recent Evidence and Implications

J. Michael McWILLIAMS

377
Citations
Patient Characteristics and Differences in Hospital Readmission Rates.

Michael L. Barnett;Michael L. Barnett;John Hsu;J. Michael McWilliams;J. Michael McWilliams

303
Citations
Changes in Quality of Care after Hospital Mergers and Acquisitions

Nancy D. Beaulieu;Leemore S. Dafny;Bruce E. Landon;Jesse B. Dalton

285
Citations
Two-year evaluation of mandatory bundled payments for joint replacement

Michael L Barnett;Andrew Wilcock;J Michael McWilliams;Arnold M Epstein

282
Citations
Use of health services by previously uninsured Medicare beneficiaries.

J. Michael McWilliams;Ellen Meara;Alan M. Zaslavsky;John Z. Ayanian

282
Citations
Impact of Medicare coverage on basic clinical services for previously uninsured adults.

J. Michael McWilliams;Alan M. Zaslavsky;Ellen Meara;John Z. Ayanian

272
Citations
Medicare Spending after 3 Years of the Medicare Shared Savings Program.

J Michael McWilliams;Laura A Hatfield;Bruce E Landon;Pasha Hamed

270
Citations
Health of previously uninsured adults after acquiring Medicare coverage.

J. Michael McWilliams;Ellen Meara;Alan M. Zaslavsky;John Z. Ayanian

237
Citations
Health insurance coverage and mortality among the near-elderly.

J. Michael McWilliams;Alan M. Zaslavsky;Ellen Meara;John Z. Ayanian

220
Citations
Association of Financial Integration Between Physicians and Hospitals With Commercial Health Care Prices

Hannah T. Neprash;Michael E. Chernew;Andrew L. Hicks;Teresa Gibson

215
Citations
Changes in Patients' Experiences in Medicare Accountable Care Organizations

J. Michael McWilliams;Bruce E. Landon;Michael E. Chernew;Alan M. Zaslavsky

197
Citations
Changes in Postacute Care in the Medicare Shared Savings Program

J. Michael McWilliams;Lauren G. Gilstrap;David G. Stevenson;Michael E. Chernew

180
Citations
Changes in Low-Value Services in Year 1 of the Medicare Pioneer Accountable Care Organization Program

Aaron L. Schwartz;Michael E. Chernew;Bruce E. Landon;Bruce E. Landon;J. Michael McWilliams;J. Michael McWilliams

177
Citations
Changes in Health Care Spending and Quality for Medicare Beneficiaries Associated With a Commercial ACO Contract

J. Michael McWilliams;J. Michael McWilliams;Bruce E. Landon;Bruce E. Landon;Michael E. Chernew

172
Citations
Steps To Reduce Favorable Risk Selection In Medicare Advantage Largely Succeeded, Boding Well For Health Insurance Exchanges

Joseph P. Newhouse;Mary Price;Jie Huang;J. Michael McWilliams

159
Citations
New Risk-Adjustment System Was Associated With Reduced Favorable Selection in Medicare Advantage

J. Michael McWilliams;John Hsu;Joseph P. Newhouse

158
Citations
Complex Medicare Advantage Choices May Overwhelm Seniors—Especially Those With Impaired Decision Making

J. Michael McWilliams;Christopher C. Afendulis;Thomas G. McGuire;Bruce E. Landon

149
Citations

Frequent Co-Authors

Michael E. Chernew Harvard University

John Hsu Harvard University

Ellen Meara Harvard University

Joseph P. Newhouse Harvard University

Adam G. Elshaug University of Melbourne

Richard G. Frank Harvard University

Benjamin D. Sommers Harvard University

Arnold M. Epstein Harvard University

External Links

Personal website of J. Michael McWilliams

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