Chima D Ndumele, MPH, PhD
Associate Professor of Public Health (Health Policy), and Associate Professor in the Institution for Social and Policy StudiesDownloadHi-Res Photo
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Associate Professor of Public Health (Health Policy), and Associate 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
Appointments
Health Policy & Management
Associate Professor TenurePrimaryInstitution for Social and Policy Studies
Associate Professor on TermSecondary
Other Departments & Organizations
- Diabetes Research Center
- Health Policy & Management
- Health Policy and Management (HPM)
- Institution for Social and Policy Studies
- SCALE Medicaid Lab
- Yale School of Public Health
- Yale School of Public Health - NEW
Education & Training
- PhD
- Brown University (2013)
- MPH
- Tufts University (2006)
Research
Overview
Public Health Interests
Chronic Diseases; Health Care Management; Community Health; Health Equity, Disparities, Social Determinants and Justice; Health Policy
Research at a Glance
Yale Co-Authors
Frequent collaborators of Chima D Ndumele's published research.
Jacob Wallace, PhD
Harlan Krumholz, MD, SM
Yuan Lu, ScD
Rohan Khera, MD, MS
Yuntian Liu, MPH
Ania Jastreboff, MD, PhD
Publications
2024
Attributing 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 2024, 185 PMID: 39585673, PMCID: PMC11589859, DOI: 10.1001/jamainternmed.2024.5451.Peer-Reviewed Original ResearchCitationsAltmetricConceptsEmergency department visitsPrimary care visitsCross-sectional studyDepartment visitsCare visitsRacial differencesWhite enrolleesMagnitude of racial differencesHealth equity metricHealth care disparitiesWhite Medicaid enrolleesSelection biasSouthern US statesPlanning indicatorsPrescription drug useCare disparitiesSelf-identified blacksHealth plansMain OutcomesEffectiveness of planningPublic reportingAdministrative claimsRandom populationMedicaid populationMedicaid enrolleesSupplemental 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 2024, 185 PMID: 39495527, PMCID: PMC11536301, DOI: 10.1001/jamainternmed.2024.5932.Peer-Reviewed Original ResearchAltmetricConceptsSupplemental Nutrition Assistance ProgramSNAP work requirementsAble-bodied adultsChronic conditionsCharacteristics of individualsLow-incomeCohort studyMedicaid coverageNutrition Assistance ProgramSocioeconomic characteristics of individualsProportion of enrolleesChronic illnessMain OutcomesProgram enrollmentMedicaid enrolleesYounger beneficiariesSocioeconomic characteristicsMedicaidStatistically significant changesTarget populationEnrolleesAssistance programsCaregiversSafety-net programsBeneficiariesRacial 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 ResearchAltmetricMeSH Keywords and ConceptsConceptsCOVID-19 public health emergencyNon-HispanicPublic health emergencyOther Pacific IslanderExcess mortalityAlaska NativesUS populationExcess deathsRates of excess mortalityCross-sectional study analyzed dataYears of potential lifeMortality relative riskNon-Hispanic whitesCross-sectional studyPacific IslandersStudy analyzed dataAll-cause mortalityEthnic groupsMortality disparitiesMortality ratioTotal populationDeath certificatesEthnic disparitiesMain OutcomesDecedent ageAlternative 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 ResearchAltmetricConceptsPayment modelsMeasures of health care qualityPayer mixFederally Qualified Health CentersCohort studyValue-based payment modelsHealth care safety netColorectal cancer screeningHealth promotion modelHealth care qualityQualified Health CentersUniform Data SystemHealth outcome measuresAlternative payment modelsRisk profileFQHC patientsAssociated with clinicCare qualityChild BMIAdult BMICancer screeningState Medicaid programsIncentivizing qualityHealth centersRetrospective cohort study
2023
Eligibility for Cardiovascular Risk Reduction Therapy in the United States Based on SELECT Trial Criteria: Insights From the National Health and Nutrition Examination Survey
Lu Y, Liu Y, Jastreboff A, Khera R, Ndumele C, Rodriguez F, Watson K, Krumholz H. Eligibility for Cardiovascular Risk Reduction Therapy in the United States Based on SELECT Trial Criteria: Insights From the National Health and Nutrition Examination Survey. Circulation Cardiovascular Quality And Outcomes 2023, 17: e010640. PMID: 37950677, PMCID: PMC10782930, DOI: 10.1161/circoutcomes.123.010640.Peer-Reviewed Original ResearchCitationsAltmetricVariation in Procedural Denials of Medicaid Eligibility Across States Before the COVID-19 Pandemic
Schpero W, Brahmbhatt D, Liu M, Ndumele C, Chatterjee P. Variation in Procedural Denials of Medicaid Eligibility Across States Before the COVID-19 Pandemic. JAMA Health Forum 2023, 4: e233892. PMID: 37976050, PMCID: PMC10656645, DOI: 10.1001/jamahealthforum.2023.3892.Peer-Reviewed Original ResearchCitationsAltmetricAfter 50 Years, Health Professional Shortage Areas Had No Significant Impact On Mortality Or Physician Density
Markowski J, Wallace J, Ndumele C. After 50 Years, Health Professional Shortage Areas Had No Significant Impact On Mortality Or Physician Density. Health Affairs 2023, 42: 1507-1516. PMID: 37931191, DOI: 10.1377/hlthaff.2023.00478.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsAssociation between Medicare eligibility at age 65 years and in-hospital treatment patterns and health outcomes for patients with trauma: regression discontinuity approach
Bhaumik D, Ndumele C, Scott J, Wallace J. Association between Medicare eligibility at age 65 years and in-hospital treatment patterns and health outcomes for patients with trauma: regression discontinuity approach. The BMJ 2023, 382: e074289. PMID: 37433620, PMCID: PMC10334336, DOI: 10.1136/bmj-2022-074289.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsAge 65 yearsHealth insurance coverageHospital admissionTreatment patternsInsurance coverageSimilar patientsTrauma encountersAge 65Health systemLevel II trauma centerPatient's hospital admissionShare of patientsMain outcome measuresProcess of careDischarge planning processHospital mortalityHospital stayTrauma centerTrauma bayTreatment decisionsOutcome measuresAmerican CollegeInpatient facilitiesLevel INursing homesExcess Mortality and Years of Potential Life Lost Among the Black Population in the US, 1999-2020
Caraballo C, Massey D, Ndumele C, Haywood T, Kaleem S, King T, Liu Y, Lu Y, Nunez-Smith M, Taylor H, Watson K, Herrin J, Yancy C, Faust J, Krumholz H. Excess Mortality and Years of Potential Life Lost Among the Black Population in the US, 1999-2020. JAMA 2023, 329: 1662-1670. PMID: 37191702, PMCID: PMC10189563, DOI: 10.1001/jama.2023.7022.Peer-Reviewed Original ResearchCitationsAltmetricMeSH Keywords and ConceptsConceptsExcess mortality ratesExcess deathsMortality ratePotential lifeWhite populationExcess mortalitySerial cross-sectional studyHighest excess mortality ratesBlack populationCause-specific mortalityCross-sectional studyHigh mortality rateNon-Hispanic whitesYears of lifeUS national dataMiddle-aged adultsCause mortalityHeart diseaseDeath certificatesNon-Hispanic black populationMAIN OUTCOMEAge groupsDisease controlMortalityBlack malesRisk Adjustment And Health Equity: The Authors Reply
McWilliams J, Weinreb G, Ndumele C, Wallace J. Risk Adjustment And Health Equity: The Authors Reply. Health Affairs 2023, 42: 732-732. PMID: 37126745, DOI: 10.1377/hlthaff.2023.00297.Peer-Reviewed Original ResearchMeSH Keywords
News
News
- December 20, 2024Source: Yale News
Real-time solutions: Yale unites scholars, policymakers to improve Medicaid
- May 23, 2024Source: Yale Insights: Health & Veritas
Chima Ndumele: Reinventing Medicaid
- April 12, 2024Source: CBS News
Nearly 1 in 4 adults dumped from Medicaid are now uninsured, survey finds
- January 30, 2024Source: KFF Health News
Where Are the Nation’s Primary Care Providers? It’s Not an Easy Answer
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