Dr. Tim O’Shea received his BSc in biomedical sciences from the University of Guelph before completing his medical degree at McMaster University and a Masters of Public Health at Harvard University. He trained in internal medicine, infectious diseases and medical microbiology at McMaster, and is Royal College certified in each of these disciplines.

He is currently an Associate Professor in the Department of Medicine, Division of Infectious Diseases.

He has served as an internal medicine consultant for the Shelter Health Network in Hamilton and for Refuge: Hamilton Centre for Newcomer Health and is currently the medical director of the Hamilton Social Medicine Response Team (HAMSMaRT).