Chima D Ndumele

Biographic Data

ID5542790
NAMEChima D Ndumele
GIVEN NAMESChima D
FAMILY NAMENdumele
SIGNATURENDUMELE C D
AFFILIATIONSYale New Haven Health System
ORCID0000-0002-4887-0043
VERIFIEDYes
TOTAL WORKS12
TOTAL CITATIONS0
WORKS AS AUTHOR12
WORKS AS EDITOR0
FIRST PUBLICATION YEAR2009
LATEST PUBLICATION YEAR2025
H-INDEX0

  • SNAP Work Requirements Reversal and Program Enrollment

    Open AccessHannah Factor, Jacob Wallace et al.ARTICLEJAMA Health Forum2025

    This cohort study assesses the association of implementation and reversal of Supplemental Nutritional Assistance Program (SNAP) work requirements with SNAP enrollment

  • Hospitalization and Credit Scores Among Medicaid Beneficiaries in Louisiana

    Open AccessBrigham Walker, Gael Compta et al.ARTICLEJAMA Health Forum2025

    This case-control study evaluates the impact of a hospitalization on credit scores for Medicaid beneficiaries in Louisiana stratified by sex, race, and ethnicity

  • Variation in Procedural Denials of Medicaid Eligibility Across States Before the Covid-19 Pandemic

    Open AccessWilliam L Schpero, Diksha Brahmbhatt et al.ARTICLEJAMA Health Forum2023

    This cross-sectional study examines denials of Medicaid and Children’s Health Insurance Program coverage due to procedural reasons

  • Trends in Racial and Ethnic Disparities in Barriers to Timely Medical Care Among Adults in the US, 1999 to 2018

    Open AccessCésar Caraballo, Chima D Ndumele et al.ARTICLEJAMA Health Forum2022

    The findings of this serial cross-sectional study of data from the National Health Interview Survey suggest that barriers to timely medical care in the US increased for all population groups from 1999 to 2018, with associated increases in disparities among race and ethnicity groups. Interventions beyond those currently implemented are needed to improve access to medical care and to eliminate disparities among race and ethnicity groups

  • Disparities in Health Care Spending and Utilization Among Black and White Medicaid Enrollees

    Open AccessJacob Wallace, Anthony Lollo et al.ARTICLEJAMA Health Forum2022

    In this cross-sectional study of US Medicaid enrollees in 3 states, Black enrollees generated lower spending and used fewer services, including primary care and recommended care for acute and chronic conditions, but had substantially higher emergency department use. While Black enrollees had higher rates of HEDIS preventive screenings, ensuring equitable access to all services in Medicaid must remain a national priority

  • Evaluation of the Association Between Medicare Eligibility and Excess Deaths During the Covid-19 Pandemic in the US

    Open AccessJacob Wallace, Anthony Lollo et al.ARTICLEJAMA Health Forum2021

    This cross-sectional regression discontinuity analysis compares deaths slightly younger and older than 65 years to examine the relationship between access to health insurance coverage and COVID-19 mortality

  • Differences in Hospitalizations Between Fee-for-Service and Medicare Advantage Beneficiaries

    Chima D Ndumele, Marc N Elliott et al.ARTICLEMedical Care2019References: 22

    BACKGROUND: Previous studies found lower hospitalization rates for enrollees in Medicare Advantage (MA) plans than for beneficiaries with fee-for-service (FFS) coverage. MA enrollment is increasing, especially for those newly eligible for Medicare, but little is known about how service use in FFS or MA differs for new beneficiaries. OBJECTIVE: To compare differences in rates of hospitalization between MA and FFS. RESEARCH DESIGN: A retrospective …

  • Variation In Health Outcomes

    Elizabeth H Bradley, Maureen Canavan et al.ARTICLEHealth Affairs2016

    Although spending rates on health care and social services vary substantially across the states, little is known about the possible association between variation in state-level health outcomes and the allocation of state spending between health care and social services. To estimate that association, we used state-level repeated measures multivariable modeling for the period 2000-09, with region and time fixed effects adjusted for total spending a…

  • What Works in Readmissions Reduction

    Amanda L Brewster, Emily Cherlin et al.ARTICLEMedical Care2016References: 45

    BACKGROUND: Hospitals across the United States are pursuing strategies to reduce avoidable readmissions but the evidence on how best to accomplish this goal is mixed, with no specific clinical practice shown to reduce readmissions consistently. Changes to hospital organizational practices, a key component of context, also may be critical to improving performance on readmissions, but this has not been studied. OBJECTIVE: The aim of this study was …

  • Effect of Copayments on Use of Outpatient Mental Health Services Among Elderly Managed Care Enrollees

    Chima D Ndumele, Amal N TrivediARTICLEMedical Care2011References: 27

    BACKGROUND: Recent parity legislation will require many insurers and the federal Medicare program to reduce mental health copayments, so that they are equivalent to copayments for other covered services. The effect of changes in mental health cost sharing has not been well studied, particularly among elderly populations. OBJECTIVE: To examine the consequences of increasing and decreasing copayments on the use of outpatient mental health services …

  • Strategies to Improve Chronic Disease Management in Seven Metro Boston Community Health Centers

    Chima D Ndumele, Beverley Russell et al.ARTICLEProgress in community health…2009

    Strategies to Improve Chronic Disease Management in Seven Metro Boston Community Health Centers Chima D. Ndumele, MPH , Beverley E. Russell, PhD, MPH , John Z. Ayanian, MD, MPP , Bruce E. Landon, MD, MBA , Thomas Keegan, PhD , A. James O’Malley, PhD , and LeRoi S. Hicks, MD, MPH What Is the Purpose of This Study? • This study was intended to gain insight from health care professionals at local community health centers regarding barriers to optima…

  • Strategies to Improve Chronic Disease Management in Seven Metro Boston Community Health Centers

    Chima D Ndumele, Beverley Russell et al.ARTICLEProgress in community health…2009

    Recommendations included adopting case management as a part of usual care for chronic disease patients; additionally, widespread implementation of CHWs may to provide a platform for more comprehensive care for patients