Juan C. Negrete received his medical degree from the University of Tucuman (Argentina) in 1961. Following this, he came to McGill University where he completed his Psychiatric training between 1963 and 1967. He became a certified specialist in Psychiatry by the Quebec College of Physicians in 1966 and then a Fellow of the Royal College of Physicians and Surgeons of Canada in 1988.
Dr. Negrete became a tenured Professor of Medicine (Psychiatry) in 1985 and Professor Emeritus in 2009, at McGill University. He was also a full Professor of Psychiatry, at the University of Toronto between 1995 and 2000 and the first Head of the Addiction Psychiatry Program, Department of Psychiatry, University of Toronto.
Dr Negrete founded the Addictions Unit of the McGill University Health Centre/Montreal General Hospital in 1980 and was the Director of the Unit until 1995. He is currently a Senior Consultant at the Addictions Unit. He also founded the Concurrent Disorders Program at the Centre for Addiction and Mental Health (CAMH) in Toronto and became its first medical director between 1996 and 2000.