Dr. Lisi is the Medical Director for Sustain Weight Loss and Wellness. Having treated tens of thousands of patients, Dr Lisi strives to help people reach their individual goals. After completing 4 years of undergraduate degree training in psychology, and biochemistry he went on to complete his Doctor of Medicine (MD). Following this, Dr Lisi completed General Surgery residency training at McMaster University. He has obtained further training in Leadership through Harvard University. Dr Lisi is an Assistant Clinical Professor in the Department of Surgery at McMaster University, Queens University, and University of Toronto. He is a recognized educator having received several teaching awards from McMaster University. Dr Lisi is both Canadian and American Board Certified and he is a Fellow of the Royal College of Physicians and Surgeons of Canada and of the American College of Surgeons. He is the Chief of Staff at Collingwood General and Marine Hospital and is the past President of the Medical Staff Association. He has served as a board member of the Collingwood General and Marine Hospital, the Collingwood General and Marine Hospital Foundation, and The Living Wish Foundation.