Mehmet Oz, MD Dr. Oz is a vice-chair of surgery and professor of cardiac surgery at Columbia University. He directs the Cardiovascular Institute and is a founder and director of the Complementary Medicine Program at New York Presbyterian Columbia. Dr. Oz’s research interests include heart replacement surgery, minimally invasive cardiac surgery, complementary medicine and health care policy. Dr. Oz has appeared on Second Opinion with Dr. Oz on the Discovery Channel. He is the author of over 350 original publications, book chapters, abstracts and books. He has received several patents.