Dr. Weiss completed his M.D. at the University of Toronto in 1987. He is an M.D. psychotherapist with a practice that focuses on the medical and psychotherapeutic management of addiction. Dr. Weiss also maintains an interest in the management of anxiety disorders and the way in which anxiety and addiction are inter-related. His approach to emotional healing finds its roots in the psychology of mindfulness which now has substantial scientific research based data to support its efficacy. Dr. Weiss has obtained training with John Kabbat-Zinn and Dr. Zindel Segal in both Mindfulness Based Stress Reduction and Mindfulness Based Cognitive Therapy. He has also obtained training in Acceptance and Commitment Therapy a newer form of CBT that emphasizes the role of acceptance in emotional wellness.

Dr. Melemis received his B.Sc. and Ph.D. in statistics from the University of Toronto, and was a postdoctoral fellow and lecturer at the University of California in Berkeley. He returned to the University of Toronto where he received his M.D. and completed a residency in family medicine. Since 1988, his practice has focused exclusively on the field of addictions and mood disorders.

Dr. Melemis is a medical inspector for the College of Physicians and Surgeons, and has authored province-wide guidelines used by the College in the assessment of addiction cases. He developed the guidelines used by a number of hospitals and institutions in the treatment of addictions, and authored the province-wide guidelines used by the Addiction Research Foundation in the management of detoxification emergencies. A member of the American Society of Addiction Medicine, Dr. Melemis has lectured widely on addiction medicine and appeared on numerous television programs as an expert on addiction-related issues.

Dr. Vivian Sarabia received her M.Sc. in Biochemistry from the University of Toronto in 1990.  Dr. Sarabia worked in a research laboratory prior to returning to complete her MD and residency in family medicine from the University of Toronto in 2000.  She has had a focused practice in mental health since 2002. 

Dr. Sarabia is also on staff at the Humber River Regional Hospital Chemical Dependency Unit.

Dr. Ashok Krishnamurthy trained at McGill Medical school, and completed his residency in family practice at the University of British Columbia. He worked for 3 years in Vancouver's downtown east-side, in a community health centre that maintained a large methadone maintenance practice. After moving to Toronto to complete a fellowship in Addiction Medicine at the Centre for Addiction and Mental Health, he has worked in various locations in and around Toronto as an Addictions Consultant, including Seaton House Shelter, Casey House Hospice and Regent Park Health Centre. He is currently running an inner city community-based addictions consultation service and is on staff at Bellwood Health Services as an addictions physician.