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Matthew Leonard Maciejewski

Professor in Population Health Sciences
Population Health Sciences
Duke Box 2720, Durham, NC 27705
215 Morris Street (Imperial), Suite 210, Durham, NC 27701

Overview


Matt Maciejewski, PhD is a Professor in the Department of Population Health Sciences. He is also a Senior Research Career Scientist in the Center of Innovation to Accelerate Discovery and Practice Transformation at the Durham VA Medical Center. Matt also holds Adjunct Professor appointments in the Schools of Public Health and Pharmacy at the University of North Carolina at Chapel Hill.

He has received funding from NIDDK, NIDA, CMS, AHRQ, FDA, VA HSR&D, and the RWJ Foundation to conduct evaluation of long-term clinical and economic outcomes of surgical interventions, behavioral interventions and Medicare program/policy changes on patients with obesity or cardiometabolic conditions.  He is also interested in methods for addressing unobserved confounding in observational studies.  Matt evaluated the first-ever population-based implementation of value-based insurance design and led the first-ever linkage of lab results and Medicare FFS claims.  He has published over 325 papers in peer-reviewed journals such as JAMA, JAMA Internal Medicine, JAMA Surgery, Annals of Internal Medicine, Health Economics, Medical Care, and Health Services Research.

Areas of expertise: Health Services Research, Health Economics, Health Policy, Multimorbidity, treatments for obesity

Current Appointments & Affiliations


Professor in Population Health Sciences · 2021 - Present Population Health Sciences, Basic Science Departments
Professor in Medicine · 2020 - Present Medicine, General Internal Medicine, Medicine
Core Faculty Member, Duke-Margolis Institute for Health Policy · 2024 - Present Duke-Margolis Institute for Health Policy, University Institutes and Centers

In the News


Published January 29, 2025
Bariatric Surgery Shown to Reduce Health Costs
Published September 6, 2016
Bariatric Surgery Can Help People Keep Weight Off Long Term
Published September 1, 2016
Do the benefits of weight-loss surgery really last?

View All News

Recent Publications


Identifying Bariatric Surgery Patients With the Most Favorable Cost Outcomes.

Journal Article Health Serv Res · April 2026 OBJECTIVE: To examine whether the economic benefits of bariatric surgery differ by patient subgroups, with the aim of identifying those that may yield the most favorable cost profile for improved return on investment in an exploratory analysis. STUDY SETTI ... Full text Link to item Cite

Impact of time zero designation on estimated COVID-19 antiviral effectiveness in observational studies.

Journal Article Am J Epidemiol · February 5, 2026 In a well-designed clinical trial, time zero is when eligibility is determined, treatment is assigned, follow-up time begins, and each of these elements is aligned. Attaining this alignment can be challenging in observational studies, risking potential bia ... Full text Link to item Cite

Risk of Hospital Readmissions and Association With Receipt of Post-Hospitalization Care Coordination Services Among High-Risk Veterans.

Journal Article Health Serv Res · February 2026 OBJECTIVE: To examine associations between receipt of post-hospitalization care coordination and VA-delivered, VA-purchased, and Medicare fee-for-service hospital readmissions among Veterans at high risk for hospitalization and/or mortality. STUDY SETTING ... Full text Link to item Cite
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Recent Grants


2/3 CTSA K12 Program at Duke University

ResearchMentor · Awarded by National Institutes of Health · 2025 - 2030

Deprescribing Decision-Making using Machine Learning Individualized Treatment Rules to Improve CNS Polypharmacy

ResearchCo Investigator · Awarded by National Institutes of Health · 2024 - 2029

Duke KURe Program

Inst. Training Prgm or CMEMentor · Awarded by National Institute of Diabetes and Digestive and Kidney Diseases · 2013 - 2028

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Education


University of Minnesota, Twin Cities · 1998 Ph.D.

External Links


Google Scholar