Ahmed M. Bayoumi

MD, MSc

Scientist

Biography

Dr. Ahmed Bayoumi is a Scientist at MAP Centre for Urban Health Solutions at the Li Ka Shing Knowledge Institute of St. Michael’s Hospital, where he is also a general internist and Human Immunodeficiency Virus (HIV) physician. He holds the Fondation Baxter and Alma Ricard Chair in Inner City Health at St. Michael’s Hospital and the University of Toronto and is a Professor in the Department of Medicine and in the Institute of Health Policy, Management and Evaluation at the University of Toronto. He is a Senior Adjunct Scientist at ICES. He has extensive experience in translating research to policy (member of the Canadian Drug Expert Committee, past Scientific Director of Converge3, past president of the international Society for Medical Decision Making, and past Director of Clinical Epidemiology and Health Care Research at the University of Toronto). He has co-led large multi-method studies, including the highly impactful Toronto and Ottawa Supervised Consumption Assessment (TOSCA) and the Marginalization and COVID-19 (MARCO) studies. His research interests include the delivery of health services, particularly to people who use drugs, people living with HIV, and other marginalized populations. He is a member of HMRAC (the Homelessness, Mortality, Research and Advocacy Coalition), an academic – community collaboration that meets regularly to discuss how research can address issues related to homelessness.

Recent Publications

  1. Hancock-Howard, R, Mendlowitz, AB, Saunders, H, Mishra, S, Plett, D, Loong, D et al.. Economic evaluation of multiple falls prevention interventions among community-residing older adults: we know the 'value', but what about 'value for money'?. Age Ageing. 2025;54 (12):. doi: 10.1093/ageing/afaf343. PubMed PMID:41342612 .
  2. Torres, S, Trudeau, M, Liu, G, Mitsakakis, N, Bayoumi, AM. Using the Edmonton Symptom Assessment System (ESAS) to Describe Symptom Burden Associated with Breast Cancer and Related Treatments: A Cross-Sectional Study. Curr Oncol. 2025;32 (11):. doi: 10.3390/curroncol32110598. PubMed PMID:41294659 PubMed Central PMC12651290.
  3. Ledlie, S, Tadrous, M, Bayoumi, AM, McCormack, D, Kent, JT, Besharah, J et al.. Initiation of opioid agonist treatment following hospital-treated opioid toxicities and the risk of repeat events in Ontario, Canada: a cohort study using inverse probability of treatment weights. BMJ Public Health. 2025;3 (2):e002779. doi: 10.1136/bmjph-2025-002779. PubMed PMID:41262783 PubMed Central PMC12625834.
  4. Ibáñez-Carrasco, F, McDuff, K, Da Silva, G, Bayoumi, AM, Chan Carusone, S, Loutfy, M et al.. Qualitative insights from an online community-based exercise intervention for persons living with HIV. Front Rehabil Sci. 2025;6 :1602007. doi: 10.3389/fresc.2025.1602007. PubMed PMID:40927745 PubMed Central PMC12415039.
  5. Su, TT, Chan Carusone, S, McDuff, K, Ibáñez-Carrasco, F, Tang, A, Bayoumi, AM et al.. Goals in motion: exploring goal setting among adults living with HIV who participated in an online community-based exercise intervention. Front Rehabil Sci. 2025;6 :1644139. doi: 10.3389/fresc.2025.1644139. PubMed PMID:40820990 PubMed Central PMC12350490.
  6. Gomes, T, McCormack, D, Kolla, G, Young, S, Bayoumi, AM, Smoke, A et al.. Comparing the effects of prescribed safer opioid supply and methadone in Ontario, Canada: a population-based matched cohort study. Lancet Public Health. 2025;10 (5):e412-e421. doi: 10.1016/S2468-2667(25)00070-2. PubMed PMID:40280140 .
  7. Firestone, M, Khoee, K, Kolla, G, O'Campo, P, Nisenbaum, R, Holness, DL et al.. COVID-19 isolation and recovery sites evaluation: Lessons learned for systems innovation. Can J Public Health. 2025; :. doi: 10.17269/s41997-025-01031-7. PubMed PMID:40279072 .
  8. Ledlie, S, Tadrous, M, Bayoumi, AM, McCormack, D, Besharah, J, Munro, C et al.. Pathways of care following opioid overdose among people with opioid use disorder: A multilevel cohort study. Drug Alcohol Depend. 2025;271 :112643. doi: 10.1016/j.drugalcdep.2025.112643. PubMed PMID:40106957 .
  9. Young, S, Raboud, J, Dodd, Z, DeBeck, K, Milloy, MJ, Wilson, D et al.. Examining the association between fentanyl use and perceived adequacy of methadone dose: A retrospective cohort study. Drug Alcohol Depend. 2025;267 :112547. doi: 10.1016/j.drugalcdep.2024.112547. PubMed PMID:39793366 PubMed Central PMC12327950.
  10. Persaud, S, Fitzgerald, M, Hawken, S, Tanuseputro, P, Boucher, L, Petrcich, W et al.. The association of combinations of social factors and SARs-CoV-2 infection: A retrospective population-based cohort study in Ontario, 2020-2021. Dialogues Health. 2024;5 :100197. doi: 10.1016/j.dialog.2024.100197. PubMed PMID:39717675 PubMed Central PMC11664076.
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Affiliations & Other Activities

  • Scientist, MAP Centre for Urban Health Solutions, St. Michael’s Hospital
  • Professor, Department of Medicine, University of Toronto
  • Professor, Institute of Health Policy, Management and Evaluation, University of Toronto