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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, 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 300 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

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 Initiatives & Academic Support Units

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


Health Expenditures Decline After Bariatric Surgery for Patients With Type 2 Diabetes.

Journal Article Diabetes care · June 2025 Bariatric surgery lowers the risk of developing microvascular and macrovascular complications of type 2 diabetes, but it is unclear whether it also lowers long-term health expenditures in this population. In a retrospective cohort study of 6,690 patients w ... Full text Cite

Filling Diabetes Medications Through VA or Medicare, or Both: Factors in Decision Making, Challenges, and Informational Needs.

Journal Article J Gen Intern Med · May 6, 2025 BACKGROUND: Veterans' dual use of VA and Medicare Part D to fill diabetes medications is common and has advantages as well as disadvantages. OBJECTIVE: To understand the factors Veterans and their care partners consider when choosing whether to fill their ... Full text Link to item Cite
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Recent Grants


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

Developing robust anti-Obesity Medication ImplemeNtatiOn approaches to maximize population health (the DOMINO study)

ResearchPrincipal Investigator · Awarded by National Institutes of Health · 2024 - 2028

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Education, Training & Certifications


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

External Links


Google Scholar