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Margaret Thompson

Title: Medical Director, Ontario, Manitoba & Nunavut Poison Centres
Designations: MD, FRCPC
Alternate Contact Name: Donna Tedesco
Alternate Phone: 416-813-6437
U of T Positions: Assistant Professor, Faculty of Medicine


Dr. Margaret Thompson is an FRCPC trained Emergency Physician at St. Michael’s Hospital and an ACMT trained Medical Toxicologist. She has been the Medical Director of the Ontario Poison Centre since 2001. She is a primary investigator at the Research Institute, has been the Program Director for the Fellowship Program in Clinical Pharmacology & Toxicology & teaches in multiple continuing education venues.


  • Collaborates on case reports, case series and retrospective database projects regarding a number of different poisoning presentations

Education and experience

  • 1982: MD, University of Toronto
  • 1986: FRCPC Emergency Medicine, University of Toronto
  • 1987–present: Staff Emergency Physician, St. Michael’s Hospital, Toronto, ON
  • 1994: dABEM Medical Toxicology
  • 2001–present: Medical Director, Ontario Poison Centre


  • 1994, 2016: Anna Jarvis Award for Teaching Excellence in Emergency Medicine
  • 2018: University of Toronto Division of Clinical Pharmacology & Toxicology Teaching Award
  • 2016–present: President Canadian Association of Poison Control Centres
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