Dr. Morris obtained his BSc (1990) and MD (1994) degrees from the University of Toronto. He trained in Internal Medicine at the University of Toronto, where he subsequently completed sub-specialty training in Infectious Diseases in 1999. He went on to complete a Master of Science degree in Epidemiology from the Harvard School of Public Health in 2000.
Dr. Morris joined the Division of Infectious Diseases in the Department of Medicine at Mount Sinai Hospital, University Health Network and University of Toronto in 2007 as an Associate Professor. He is the founding Director of the Mount Sinai Hospital-University Health Network Antimicrobial Stewardship Program, formed in 2009. Dr. Morris is also the Chair of the Specialty Committee of Infectious Diseases with the Royal College of Physicians and Surgeons of Canada, and Chair of the Antimicrobial Stewardship and Resistance Committee of the Association of Medical Microbiology and Infectious Diseases Canada, and Member of the parallel committee at the Society for Healthcare Epidemiology of America.