Dr. Mark A. Greenberg, B.Sc., MD, CCFP(AM)

Dr. Mark Greenberg has been in full-time Family Practice since 1989, and is certified in Family Medicine by the College of Family Physicians of Canada. As of 2014, his family practice is limited to treatment of individuals with substance use disorder and infant circumcision. He has been performing infant circumcision since 2001. He has worked in the Emergency Department of Humber River Regional Hospital, and has extensive operating room experience. He has served as Chief of the Department of Family Medicine at the York Finch General Hospital (Now Humber River Regional Hospital.) Currently, he is the Lead Physician, Addiction Service/RAAM Clinic, at the Sunnybrook Health Sciences Centre, Toronto. Dr. Greenberg no longer performs Brit Milah.

“I strive for the best care for my patients, by creating a family atmosphere where each patient is given the necessary care in a prompt manner. Where your time is as respected as mine!


      Bachelor of Science, 1984, University of Toronto     

       Doctor of Medicine, 1988, Faculty of Medicine, University of Toronto

       Residency in Family & Community Medicine, 1988-1990


College of Physicians and Surgeons of Ontario, Certificate of Independent Practice, 1989

College of Family Physicians of Canada

      Certified in Family Medicine, 1990

       Fellowship in Family Medicine, 2005

       Certificate of Added Competency in Addiction Medicine, 2021

American Society of Addiction Medicine

     Certified in Addiction Medicine, 1998

Hospital Appointments and Professional Involvement

Consulting Staff, Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto

Lecturer, Temerty Faculty of Medicine, University of Toronto

Certified Mohel- Vaad Harabonim of Toronto  

Certified Mohel – Rabbinical Assembly of Ontario


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