Dr. Yosef Nahmias was born and raised in Mexico City. After he had graduated from the Universidad Tecnologica de Mexico, School of Dentistry, in 1980 with a degree in dentistry, he decided to advance his education and chose endodontics as his specialty. Under the guidance of Dr. Harold Gerstein of Marquette University in Milwaukee, Wisconsin, he completed his thesis on Apex Locators and earned his Master of Science degree in 1983.

Dr. Nahmias has authored and published many articles. He continues to lecture in Canada, Mexico and across South America. The University of Toronto, Faculty of Dentistry has involved Dr. Nahmias in teaching their postgraduate level students in endodontics. Dr. Nahmias resides in Toronto, Ontario with his wife and five children, and has maintained a private practice specializing in endodontics in the town of Oakville, Ontario since 1983.