Westyn Branch-Elliman MD, MMSc

Adjunct Instructor, General Internal Medicine

72 E. Concord Street | (617) 414-5013
Westyn Branch-Elliman

General Internal Medicine


I am a physician investigator who focuses on optimizing healthcare resource utilization and expanding infection prevention programs beyond traditional boundaries. My research projects include epidemiologic and economic evaluations of postpartum breast infections, comparative and cost-effectiveness evaluations of preventions designed to reduce healthcare-associated infections (HAI), and development of novel electronic tools for improved HAI detection. The majority of my time is dedicated to clinical research. I also see patients and teach medical students, residents and infectious diseases fellows. In my previous role as the Medical Director of Infection Prevention at the Eastern Colorado VA Healthcare System, I dedicated significant effort to administrative responsibilities, including healthcare epidemiology and antimicrobial stewardship.


Medicine, MD, Northwestern University School of Medicine

Clinical Evaluation/Research, MMS/MMSc, Harvard Medical School

Cell & Molecular Biology, BA, University of California, Berkeley


Published on 2/9/2024

Siempos II, Kalil AC, Belhadi D, Veiga VC, Cavalcanti AB, Branch-Elliman W, Papoutsi E, Gkirgkiris K, Xixi NA, Kotanidou A, Hermine O, Porcher R, Mariette X. Immunomodulators for immunocompromised patients hospitalized for COVID-19: a meta-analysis of randomized controlled trials. EClinicalMedicine. 2024 Mar; 69:102472. PMID: 38361992.

Published on 2/2/2024

Livorsi DJ, Branch-Elliman W, Drekonja D, Echevarria KL, Fitzpatrick MA, Goetz MB, Graber CJ, Jones MM, Kelly AA, Madaras-Kelly K, Morgan DJ, Stevens VW, Suda K, Trautner BW, Ward MJ, Jump RLP. Research agenda for antibiotic stewardship within the Veterans' Health Administration, 2024-2028. Infect Control Hosp Epidemiol. 2024 Feb 02; 1-7. PMID: 38305034.

Published on 1/25/2024

Monach PA, Anand ST, Fillmore NR, La J, Branch-Elliman W. Underuse of Antiviral Drugs to Prevent Progression to Severe COVID-19 - Veterans Health Administration, March-September 2022. MMWR Morb Mortal Wkly Rep. 2024 Jan 25; 73(3):57-61. PMID: 38271286.

Published on 12/27/2023

Mull HJ, Foster MV, Higgins MCSS, Sturgeon DJ, Hederstedt K, Bart N, Lamkin RP, Sullivan BA, Ayeni C, Branch-Elliman W, Malloy PC. Development and Validation of an Electronic Adverse Event Model for Patient Safety Surveillance in Interventional Radiology. J Am Coll Radiol. 2023 Dec 27. PMID: 38157954.

Published on 12/6/2023

Harvey LH, Branch-Elliman W, Boudreau J, Sliwinski SK, Gifford AL, Ho MQ, Dinges E, Hyde J. Harm reduction stories: leveraging graphic medicine to engage veterans in substance use services within the VA. Harm Reduct J. 2023 Dec 06; 20(1):177. PMID: 38057789.

Published on 12/1/2023

Shenoy ES, Doron S, Branch-Elliman W. Universal Masking in Health Care Settings. Ann Intern Med. 2023 Dec; 176(12):eL230351. PMID: 38109747.

Published on 11/15/2023

Anand ST, Vo AD, La J, Brophy M, Do NV, Fillmore NR, Branch-Elliman W, Monach PA. Risk of severe coronavirus disease 2019 despite vaccination in patients requiring treatment with immune-suppressive drugs: A nationwide cohort study of US Veterans. Transpl Infect Dis. 2024 Feb; 26(1):e14168. PMID: 37966134.

Published on 11/14/2023

Fillmore NR, La J, Wu JT, Corrigan JK, Branch-Elliman W, Monach P, Brophy MT, Do NV, Munshi NC. Even after SARS-CoV-2 booster, there is increased COVID-19 breakthrough infection in patients with plasma cell disorders. Blood Adv. 2023 Nov 14; 7(21):6767-6770. PMID: 37647600.

Published on 11/14/2023

Trottier CA, La J, Li L, Fillmore NR, Monach PA, Doron S, Branch-Elliman W. Longitudinal trends in 30-day mortality attributable to SARS-CoV-2 among vaccinated and unvaccinated US veteran patients. Infect Control Hosp Epidemiol. 2023 Nov 14; 1-3. PMID: 37960943.

Published on 11/11/2023

Trottier C, La J, Li LL, Alsoubani M, Vo AD, Fillmore NR, Branch-Elliman W, Doron S, Monach PA. Maintaining the Utility of Coronavirus Disease 2019 Pandemic Severity Surveillance: Evaluation of Trends in Attributable Deaths and Development and Validation of a Measurement Tool. Clin Infect Dis. 2023 Nov 11; 77(9):1247-1256. PMID: 37348870.

View full list of 120 publications.