Sean P. Cleary

Sean P. Cleary, M.D., is a Professor of Surgery and holds the Bernard and Ryna Langer Chair of the Division of General Surgery at the University of Toronto. His clinical practice is focused on Hepatobiliary and Pancreatic surgery at the University Health Network, Toronto General Hospital, in Toronto, Canada.

Dr. Cleary earned his B.Sc. with honors at Queens University in Kingston, Ontario, and his M.D. at the University of Western Ontario in London, Ontario. He completed a residency in general surgery at the University of Toronto, where he also completed the Clinical Investigator Program earning his Master of Science degree. He continued his training at the University of Toronto, completing a fellowship in hepatobiliary oncology and transplantation surgery and earning his Master of Public Health in community health and epidemiology.

Dr. Cleary served on faculty as Professor of Surgery at Mayo Clinic in Rochester, Minnesota from March 2017-July 2023. He served Division Chair of Hepatobiliary and Pancreas Surgery, co-Deputy Director (Disease Groups) and Chair of the Hepatobiliary and Pancreatic Disease Group of the Mayo Clinic Comprehensive Cancer Center and a consultant in the Division of Hepatobiliary and Pancreas Surgery Department of Surgery at Mayo Clinic in Rochester, Minnesota.
His clinical interests include the surgical treatment of pancreatic, hepatic and biliary malignancies with a specific focus on minimally invasive approaches to these cancers. His research interests include the genetic epidemiology of pancreatic and hepatocellular cancers. He has authored or co-authored >190 peer reviewed publications.

In addition to his clinical and research activities, Dr. Cleary is active in education and has provided mentorship to many residents and fellows, among others. He has over 10 years experience as director of the Hepato-pancreatico-biliary surgical fellowships at UHN and Mayo Clinic. He is a recipient of the Frank Milles Teaching Award and Nicolas Colapinto Teaching Award, conferred by the University of Toronto.

Dr. Cleary is a member of the American Surgical Association as well as a fellow and member of Board of Governors of the American College of Surgeons. He is currently the President of the Canadian Association of General Surgeons and President of the Americas Hepato-Pancreato-Biliary Association.