Dr. Haas is a certified specialist in endodontics and is extensively involved in continuing education to dentists. He maintains a private practice in Toronto, limited to endodontics and microsurgery. Dr. Haas graduated from the University of Toronto School of Dentistry and obtained his specialty training at the Albert Einstein Medical Center in Philadelphia. Dr. Haas is a Fellow of the Royal College of Dentists of Canada and is on staff at the University of Toronto Endodontics Department and the Hospital for Sick Children Department of Dentistry. He has lectured and given many hands-on courses internationally to numerous dental organizations and universities on nearly all aspects of modern endodontics.