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!