David Tabby was born in Philadelphia. He graduated from Princeton University in 1980 with a degree in Population Biology. Dr. Tabby earned his Osteopathic Medical degree from the Philadelphia College of Osteopathic Medicine in 1984. He trained in Neurology at Jefferson with Robert Schwartzman and served as chief resident. Dr. Tabby was in private practice in Philadelphia from 1988-2002. Then he joined the faculty of the Drexel University College of Medicine. In 2014, he re-entered private practice.