Please note: Dr. Hwang is not taking any summer students.

Research Interests

Homelessness, housing as a social determinant of health, health care for homeless persons, marginalized populations, inner city health, urban health, socioeconomic status, access to care, community-based health care, health services research.

Research Activities

Dr. Hwang’s research program focuses on interventions to improve the health of people experiencing homelessness, and to interrupt chronic homelessness itself.


Recent Publications

  1. Gicas, KM, Mejia-Lancheros, C, Nisenbaum, R, Wang, R, Hwang, SW, Stergiopoulos, V et al.. Cognitive determinants of community functioning and quality of life in homeless adults with mental illness: 6-year follow-up from the At Home/Chez Soi Study Toronto site. Psychol Med. 2021; :1-9. doi: 10.1017/S0033291721001550. PubMed PMID:33926584 .
  2. Tweed, EJ, Thomson, RM, Lewer, D, Sumpter, C, Kirolos, A, Southworth, PM et al.. Health of people experiencing co-occurring homelessness, imprisonment, substance use, sex work and/or severe mental illness in high-income countries: a systematic review and meta-analysis. J Epidemiol Community Health. 2021; :. doi: 10.1136/jech-2020-215975. PubMed PMID:33893182 .
  3. Mejia-Lancheros, C, Lachaud, J, Aubry, T, Wiens, K, O'Campo, P, Stergiopoulos, V et al.. Multi-trajectory group profiles of well-being and associated predictors among adults experiencing homelessness and mental illness: findings from the At Home/Chez Soi study, Toronto site. Soc Psychiatry Psychiatr Epidemiol. 2021; :. doi: 10.1007/s00127-021-02093-x. PubMed PMID:33866385 .
  4. Cusimano, MD, Saha, A, Zhang, D, Zhang, S, Casey, J, Rabski, J et al.. Cognitive Dysfunction, Brain Volumes, and Traumatic Brain Injury in Homeless Persons. Neurotrauma Rep. 2021;2 (1):136-148. doi: 10.1089/neur.2020.0031. PubMed PMID:33796876 PubMed Central PMC8006590.
  5. Kiran, T, Craig-Neil, A, Das, P, Lockwood, J, Wang, R, Nathanielsz, N et al.. Factors associated with SARS-CoV-2 positivity in 20 homeless shelters in Toronto, Canada, from April to July 2020: a repeated cross-sectional study. CMAJ Open. ;9 (1):E302-E308. doi: 10.9778/cmajo.20200253. PubMed PMID:33785478 PubMed Central PMC8096394.
  6. Cusimano, MD, Korman, MB, Carpino, M, Feher, A, Puvirajasingam, J, Zhang, S et al.. The Temporal Relations of Traumatic Brain Injury, Victimization, Aggression, and Homelessness: A Developmental Trajectory. Neurotrauma Rep. 2021;2 (1):103-114. doi: 10.1089/neur.2020.0050. PubMed PMID:33748815 PubMed Central PMC7968566.
  7. Wiens, K, Nisenbaum, R, Sucha, E, Aubry, T, Farrell, S, Palepu, A et al.. Does Housing Improve Health Care Utilization and Costs? A Longitudinal Analysis of Health Administrative Data Linked to a Cohort of Individuals With a History of Homelessness. Med Care. 2021;59 (Suppl 2):S110-S116. doi: 10.1097/MLR.0000000000001379. PubMed PMID:33710082 .
  8. Mejia-Lancheros, C, Woodhall-Melnik, J, Wang, R, Hwang, SW, Stergiopoulos, V, Durbin, A et al.. Associations of resilience with quality of life levels in adults experiencing homelessness and mental illness: a longitudinal study. Health Qual Life Outcomes. 2021;19 (1):74. doi: 10.1186/s12955-021-01713-z. PubMed PMID:33663538 PubMed Central PMC7971123.
  9. Whisler, A, Dosani, N, To, MJ, O'Brien, K, Young, S, Hwang, SW et al.. The effect of a Housing First intervention on primary care retention among homeless individuals with mental illness. PLoS One. 2021;16 (2):e0246859. doi: 10.1371/journal.pone.0246859. PubMed PMID:33571302 PubMed Central PMC7877594.
  10. Wang, A, Pridham, KF, Nisenbaum, R, Pedersen, C, Brown, R, Hwang, SW et al.. Factors Associated with Readmission Among General Internal Medicine Patients Experiencing Homelessness. J Gen Intern Med. 2021; :. doi: 10.1007/s11606-020-06483-w. PubMed PMID:33515192 .
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Affiliations & Other Activities

  • Scientist, Li Ka Shing Knowledge Institute, St. Michael’s Hospital
  • Staff Physician, Division of General Internal Medicine, St. Michael’s Hospital
  • Director, Division of General Internal Medicine, University of Toronto
  • Professor, Department of Medicine, University of Toronto
  • Professor, Dalla Lana School of Public Health, University of Toronto
  • Professor, Institute of Health Policy, Management and Evaluation, University of Toronto