Dr. Tanguay is a psychiatrist who completed two fellowships, one in Addiction Medicine and Pain Medicine. He is a clinical assistant professor with the departments of Psychiatry and Surgery at the Cumming School of Medicine, University of Calgary. Dr. Tanguay is the Senior Medical Lead for the Compassionate Intervention division of Recovery Alberta. He is the co-founder and co-developer of the Community Rapid Access Addiction Medicine (RAAM) clinic for Recovery Alberta where he works clinically.

Dr. Tanguay is member of the Calgary Police Commission, legislated to manage the annual budget (~$600 million) as well as to establish policies providing for efficient and effective policing. He is the Co-Chair of the Western Canadian Addiction Forum and Chair of the Canadian Addiction Counsel. He is a founding director of the Canadian Academy of Addiction Psychiatry and Co-Chair of the conference. Dr. Tanguay has been heavily involved in health policy including helping to lead the Alberta Psychedelic Legislative Committee and the Alberta Safe Supply Legislative Committee. He was a member of the Alberta Recovery Expert Advisory Panel directly advising the Alberta Minister of Addiction and Mental Health. He was a member of the Public Health Emergencies Governance Review Panel for the Government of Alberta and was a member of the Supervised Consumption Review Committee.

Dr. Tanguay has been recognized for his work and is the 2021 Royal College of Physicians and Surgeons of Canada recipient of the Early Career Leadership Award, was inducted into the University of Lethbridge Alumni Honour Society, is a recipient of the Queen Elizabeth II Platinum Jubilee Medal, and is a recipient of the King Charles III Coronation Medal.