Chima D Ndumele, MPH, PhD
Department Chair and Professor of Public Health (Health Policy) and Professor in the Institution for Social and Policy StudiesDownloadHi-Res Photo
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Department Chair and Professor of Public Health (Health Policy) and Professor in the Institution for Social and Policy Studies
Biography
Chima Ndumele is an Associate Professor of Public Health (Health Policy) at the Yale School of Public Health. His research is focused on better understanding factors which influence the way vulnerable populations connect with and access health care resources. Specifically, he conducts work in three areas. The first examines how changes in local policy environment impact the care received by Medicaid enrollees. The second area explores how safety-net organizations can improve health care services delivery. Finally, he investigates the effects of changes in insurance coverage on the quality of care received by individuals with chronic physical and mental health conditions. He received his PhD from the Brown University School of Public Health
Last Updated on June 02, 2025.
Appointments
Health Policy & Management
ChairDualHealth Policy & Management
ProfessorPrimaryInstitution for Social and Policy Studies
ProfessorSecondary
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Education & Training
- PhD
- Brown University (2013)
Research
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Overview
Public Health Interests
Chronic Diseases; Community Health; Health Care Management; Health Policy; Health Equity, Disparities, Social Determinants and Justice
ORCID
0000-0002-4887-0043
Research at a Glance
Yale Co-Authors
Frequent collaborators of Chima D Ndumele's published research.
Publications Timeline
A big-picture view of Chima D Ndumele's research output by year.
Jacob Wallace, PhD
Harlan Krumholz, MD, SM
Yuan Lu, ScD
Mark Schlesinger, PhD
Rohan Khera, MD, MS
Susan Busch, PhD
18Publications
247Citations
Publications
2026
The Private Provision of Public Services: Evidence from Random Assignment in Medicaid
Agafiev Macambira D, Geruso M, Lollo A, Ndumele C, Wallace J. The Private Provision of Public Services: Evidence from Random Assignment in Medicaid. American Economic Review 2026, 116: 2038-2084. DOI: 10.1257/aer.20230541.Peer-Reviewed Original ResearchAltmetricVariation in time to payment in Medicaid managed care: evidence from national TAF data, 2022
Zhu J, Meath T, Moreau N, McConnell K, Busch S, Ndumele C. Variation in time to payment in Medicaid managed care: evidence from national TAF data, 2022. Health Affairs Scholar 2026, 4: qxag102. PMID: 42158222, PMCID: PMC13182904, DOI: 10.1093/haschl/qxag102.Peer-Reviewed Original ResearchVariation In Medicaid And Medicare Payment Rates To Community Health Centers, 2023
Markowski J, Vandenbroeck A, Ndumele C. Variation In Medicaid And Medicare Payment Rates To Community Health Centers, 2023. Health Affairs 2026, 45: 413-422. PMID: 41941685, DOI: 10.1377/hlthaff.2025.00949.Peer-Reviewed Original ResearchAltmetric
2025
Medicaid: Increased Patient Access To MOUD In Residential Treatment Associated With Facility Openings And Closures, 2012–22
Beetham T, Newton H, Ndumele C, Fiellin D, Busch S. Medicaid: Increased Patient Access To MOUD In Residential Treatment Associated With Facility Openings And Closures, 2012–22. Health Affairs 2025, 44: 1122-1130. PMID: 40893069, PMCID: PMC12809527, DOI: 10.1377/hlthaff.2025.00348.Peer-Reviewed Original ResearchCitationsAltmetricHospitalization and Credit Scores Among Medicaid Beneficiaries in Louisiana
Walker B, Compta G, Siebert A, Anderson A, Callison K, Ndumele C, Wallace J. Hospitalization and Credit Scores Among Medicaid Beneficiaries in Louisiana. JAMA Health Forum 2025, 6: e251570. PMID: 40478557, PMCID: PMC12144616, DOI: 10.1001/jamahealthforum.2025.1570.Peer-Reviewed Original ResearchAltmetricSNAP Work Requirements Reversal and Program Enrollment
Factor H, Wallace J, Lavallee M, Lollo A, Ndumele C. SNAP Work Requirements Reversal and Program Enrollment. JAMA Health Forum 2025, 6: e251587. PMID: 40445600, PMCID: PMC12125636, DOI: 10.1001/jamahealthforum.2025.1587.Peer-Reviewed Original ResearchAltmetricSupplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation
Ndumele C, Factor H, Lavallee M, Lollo A, Wallace J. Supplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation. JAMA Internal Medicine 2025, 185: 92-100. PMID: 39495527, PMCID: PMC11536301, DOI: 10.1001/jamainternmed.2024.5932.Peer-Reviewed Original ResearchCitationsAltmetricAttributing Racial Differences in Care to Health Plan Performance or Selection
Wallace J, Ndumele C, Lollo A, Macambira D, Lavallee M, Green B, Duchowny K, McWilliams J. Attributing Racial Differences in Care to Health Plan Performance or Selection. JAMA Internal Medicine 2025, 185: 61-72. PMID: 39585673, PMCID: PMC11589859, DOI: 10.1001/jamainternmed.2024.5451.Peer-Reviewed Original ResearchCitationsAltmetric
2024
Racial and Ethnic Disparities in Age-Specific All-Cause Mortality During the COVID-19 Pandemic
Faust J, Renton B, Bongiovanni T, Chen A, Sheares K, Du C, Essien U, Fuentes-Afflick E, Haywood T, Khera R, King T, Li S, Lin Z, Lu Y, Marshall A, Ndumele C, Opara I, Loarte-Rodriguez T, Sawano M, Taparra K, Taylor H, Watson K, Yancy C, Krumholz H. Racial and Ethnic Disparities in Age-Specific All-Cause Mortality During the COVID-19 Pandemic. JAMA Network Open 2024, 7: e2438918. PMID: 39392630, PMCID: PMC11581672, DOI: 10.1001/jamanetworkopen.2024.38918.Peer-Reviewed Original ResearchCitationsAltmetricAlternative Payment Models and Performance in Federally Qualified Health Centers
Markowski J, Wallace J, Schlesinger M, Ndumele C. Alternative Payment Models and Performance in Federally Qualified Health Centers. JAMA Internal Medicine 2024, 184: 1065-1073. PMID: 38976258, PMCID: PMC11231906, DOI: 10.1001/jamainternmed.2024.2754.Peer-Reviewed Original ResearchCitationsAltmetric
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News
- August 03, 2026
New Study Finds Medicaid Managed Care Lowers Some Costs, But Tradeoffs Remain
- May 13, 2026
Above and Beyond: Honoring Faculty and Staff
- December 17, 2025
Medicaid reimbursement boosts access to opioid treatment at new facilities
- July 18, 2025
New Work Requirements for SNAP Benefits Could Hurt Families
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