Dr. Walter Unger is a board certified dermatologist in both Canada and the USA. He trained in dermatology in London, England, Philadelphia and Toronto. He was one of the first physicians to limit his private practice entirely to transplanting hair many years ago, and began a long career of not only practicing it in Toronto and New York but also teaching it. He has trained physicians from various countries throughout the world including most European countries, nearly all Middle Eastern ones, India, China, Korea, and Japan, as well as many doctors from Canada and the USA. Currently, three of them, Dr. Robin Unger, Dr. Carlos Wesley and Dr. Marla Rosenberg are in private practice with him in New York and Toronto, respectively. Dr. Unger is a Clinical Professor in the Department of Dermatology at Mt. Sinai School of Medicine New York, Associate Professor (Dermatology), University of Toronto, and was Adjunct Professor (Dermatology) at Johns Hopkins School of Medicine from 2003 to 2007. He is the author of chapters on hair transplantation in 34 medical texts, has published numerous articles in medical journals, and has been invited to deliver scientific papers at over 142 medical meetings throughout the world over the past 35 years. His textbook, Hair Transplantation, a multi-author work, has been considered the standard reference text for hair transplant surgeons since the publication of the first edition. The fifth edition (2011) has just become available. He has served on many journal editorial boards and at present is a contributing editor for the Journal of Dermatologic Surgery and is on the Peer Review Panel for Cosmetic Dermatology. Dr. Unger has been selected by his peers to be included in the database of ”Best Doctors” (Canada) and in Castle Connolly’s “Top Doctors: New York Metro Area” 2007 to 2010. In 2001, Dr. Richard Shiell, the editor of Hair Transplant Forum International, the official publication of the International Society of Hair Restoration Surgery, wrote this about Dr. Unger:
When the history of hair restoration surgery is written in future years, the outstanding giant of our profession in this first half century will most likely not be a Japanese pioneer or some North American surgical entrepreneur, but Walter P. Unger, MD, a dermatologist from Toronto, Canada. His talents have shone like a beacon for over 20 years and his influence has been immense. We have all bathed in his illuminating insights while we avidly read his three books, 26 textbook chapters, and innumerable scientific papers. 
Dr. Unger lives and practices in New York and Toronto with his wife Marcia and they have eight children. Dr. Unger’s past-times include: swimming golf, travel, reading, and spending time at his farm on the rare occasions when his writing and lecture schedules permit that luxury.