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Tyler Chesney

MD, MSc

Investigator

Email: tyler.chesney@unityhealth.to
Tel: 416-864-5672

Biography

Tyler Chesney is a colorectal and gastrointestinal surgical oncologist at St. Michael’s Hospital, Assistant Professor at the University of Toronto in the Department of Surgery, and Investigator at the Li Ka Shing Knowledge Institute. He completed medical school at McMaster University in 2013 and a Master of Science at Queen’s University focusing on knowledge translation in cognitive aging and dementia. He completed residency in General Surgery at the University of Toronto in 2018, and Complex General Surgical Oncology at the University of Toronto in 2020.

He has a longstanding commitment to caring for older adults including volunteer work with Alzheimer Society and Hospice, leadership of the geriatrics interest group in medical school, and research and clinical activity as a surgical trainee. Now, he is a member of the Canadian Network on Aging and Cancer (CNAC), the International Society of Geriatric Oncology (SIOG) Surgical Ad-Hoc Committee, and the Canadian Society of Surgical Oncology (CSSO) Executive Committee.  He has a strong interest in building collaborative networks within Canada to enhance the care of surgical oncology patients. His ongoing clinical and scholarly work aims to build clinical capacity of geriatric surgical oncology and advance the care of older adults with cancer within Canada. At St. Michael’s he is helping to build the Older Adults Surgery & Oncology Program (OSOP), and creating cross-specialty learning events between surgery and geriatrics trainees.

Recent Publications

  1. Wijeysundera, DN, Alibhai, SMH, Puts, MTE, Xu, K, Daza, JF, Diep, C et al.. Significant new disability after major non-cardiac surgery in older adults aged 65 years and older in Canada: a multicentre prospective cohort study. Lancet Healthy Longev. 2025;6 (11):100789. doi: 10.1016/j.lanhl.2025.100789. PubMed PMID:41317744 .
  2. Jacob, G, Wong, EKC, Fuh, R, Chesney, TR, Wong, CL. Implementation and Outcomes of a Perioperative Geriatrics Strategy, PRIME, for Older Adults Undergoing Gastrointestinal Cancer Surgery. Curr Oncol. 2025;32 (9):. doi: 10.3390/curroncol32090494. PubMed PMID:41002564 PubMed Central PMC12468265.
  3. Hallet, J, Ribeiro, T, Mahar, AL, Chan, WC, McIsaac, DI, Gombay, A et al.. Homecare After Cancer Surgery for Older Adults: Derivation and Validation of a Predictive Tool. Ann Surg Oncol. 2025;32 (10):7680-7692. doi: 10.1245/s10434-025-17824-6. PubMed PMID:40705263 .
  4. Russell, B, Ahmadzadeh, A, Haris, K, Jiang, S, Chesney, TR, MacRae, H et al.. Peer Support Programs for Physicians and Health Care Providers: A Scoping Review. Jt Comm J Qual Patient Saf. 2025;51 (9):589-600. doi: 10.1016/j.jcjq.2025.05.003. PubMed PMID:40683815 .
  5. Hladkowicz, E, Kidd, G, Flexman, A, Garland, A, Hallet, J, Kobewka, D et al.. Description and validation of the Postoperative Discharge Recovery State outcome: a patient-partnered population-based cohort study. Br J Anaesth. 2025;135 (3):746-754. doi: 10.1016/j.bja.2025.05.020. PubMed PMID:40562633 PubMed Central PMC12489357.
  6. Hallet, J, Mahar, AL, Chan, WC, McIsaac, DI, Coburn, N, Gombay, A et al.. A Predictive Tool for Ability to Remain at Home After Cancer Surgery in Older Adults. JAMA Surg. 2025;160 (8):903-911. doi: 10.1001/jamasurg.2025.1888. PubMed PMID:40560594 PubMed Central PMC12199182.
  7. Navab, E, Legacy, N, Haase, KR, Freeman, L, Smith, A, Goudarzian, AH et al.. Interventions to support caregivers of older adults undergoing surgery: A systematic review. Am J Surg. 2025;242 :116226. doi: 10.1016/j.amjsurg.2025.116226. PubMed PMID:39922135 .
  8. Freeman, L, Smith, A, Ku, NW, Ayala, AP, Bennie, F, Berger, A et al.. Interventions to improve health care provider implementation and patient adherence of patients to recommendations on geriatric assessment and management in older adults: A scoping review protocol. PLoS One. 2025;20 (1):e0317177. doi: 10.1371/journal.pone.0317177. PubMed PMID:39854576 PubMed Central PMC11760611.
  9. Daza, JF, Chesney, TR, Morales, JF, Xue, Y, Lee, S, Amado, LA et al.. Clinical Tools to Assess Functional Capacity During Risk Assessment Before Elective Noncardiac Surgery : A Scoping Review. Ann Intern Med. 2025;178 (1):75-87. doi: 10.7326/ANNALS-24-00413. PubMed PMID:39527821 .
  10. McIsaac, DI, Tandon, P, Kidd, G, Branje, K, Hladkowicz, E, Hallet, J et al.. STRIVE pilot trial: a protocol for a multicentre pragmatic internal pilot randomised controlled trial of Structured TRaining to Improve fitness in a Virtual Environment (STRIVE) before surgery. BMJ Open. 2024;14 (11):e093710. doi: 10.1136/bmjopen-2024-093710. PubMed PMID:39510784 PubMed Central PMC11552010.
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Affiliations & Other Activities

  • Department of Surgery, University of Toronto
  • Department of Surgery, St. Michael’s Hospital, Toronto