Staff Profile

Ali Hajjar joined the MGH Institute for Technology Assessment (ITA) in August 2020 as a Postdoctoral Research Fellow within the Radiology Department. He received his Ph.D. in Industrial and Systems Engineering from the University of Wisconsin-Madison, M.S. in Industrial Engineering from the University of Pittsburgh, and B.S. in Industrial Engineering and Operations Research from King Fahd University of Petroleum and Minerals (KFUPM), Saudi Arabia.

Dr. Hajjar’s research lies in the area of medical decision making and operational efficiency in healthcare delivery systems. His primary methodological and computational research interest is stochastic optimization, in particular completely and partially observable Markov decision processes (MDPs). During his graduate studies, his research focused on personalizing the screening decisions for patients with multiple chronic conditions (MCC).

At ITA, he is working with Dr. Jagpreet Chhatwal on research projects related to nonalcoholic fatty liver disease (NAFLD) and screening for Hepatocellular Carcinoma (HCC).

Selected Publications


Chhatwal, Jagpreet; Hajjar, Ali; Mueller, Peter P; Nemutlu, Gizem; Kulkarni, Neeti; Peters, Mary Linton B; Kanwal, Fasiha

Hepatocellular Carcinoma Incidence Threshold for Surveillance in Virologically Cured Hepatitis C Individuals Journal Article

In: Clin Gastroenterol Hepatol, vol. 22, iss. 1, pp. 91-101, 2024, ISSN: 1542-7714.

Abstract | Links | BibTeX


Lu, Yifan; Hajjar, Ali; Cryns, Vincent L; Trentham-Dietz, Amy; Gangnon, Ronald E; Heckman-Stoddard, Brandy M; Alagoz, Oguzhan

Breast cancer risk for women with diabetes and the impact of metformin: A meta-analysis Journal Article

In: Cancer Med, vol. 12, no. 10, pp. 11703–11718, 2023, ISSN: 2045-7634.

Abstract | Links | BibTeX


Mueller, Peter P.; Chen, Qiushi; Ayer, Turgay; Nemutlu, Gizem; Hajjar, Ali; Bethea, Emily D.; Peters, Mary Linton B.; Lee, Brian P.; Janjua, Naveed Z.; Kanwal, Fasiha; Chhatwal, Jagpreet

Duration and cost-effectiveness of hepatocellular carcinoma surveillance in hepatitis C patients after viral eradication. Journal Article

In: Journal of hepatology, vol. 77, iss. 1, pp. 55-62, 2022, ISSN: 1600-0641.

Abstract | Links | BibTeX

Ergun, Mehmet A; Hajjar, Ali; Alagoz, Oguzhan; Rampurwala, Murtuza

Optimal breast cancer risk reduction policies tailored to personal risk level Journal Article

In: Health Care Manag Sci, 2022, ISSN: 1386-9620.

Abstract | Links | BibTeX


Hajjar, Ali; Alagoz, Oguzhan

Ëffective Preventive Care Management of Multiple Chronic Conditions" Journal Article

In: SSRN, 2019, ().

Links | BibTeX

Alagoz, Oguzhan; Hajjar, Ali; Chootipongchaivat, Sarocha; Ravesteyn, Nicolien T.; Yeh, Jennifer; Ergun, Mehmet Ali; Koning, Harry J.; Chicoine, Brian; Martin, Barry

Benefits and harms of mammography screening for women with Down syndrome: a collaborative modeling study Journal Article

In: Journal of General Internal Medicine, vol. 34, no. 11, pp. 2374–2381, 2019, ().

Links | BibTeX

Hajjar, Ali; Ergun, Mehmet A.; Alagoz, Oguzhan; Rampurwala, Murtuza

Cost-effectiveness of adjuvant paclitaxel and trastuzumab for early-stage node-negative, HER2-positive breast cancer Journal Article

In: PloS one, vol. 14, no. 6, pp. e0217778, 2019, ().

Links | BibTeX