Dr. Johnston was raised in Conyers, Georgia. He graduated from the University of Georgia in 1989 with a degree in Education (specializing in Exercise Physiology). After graduating from UGA, he practiced in the field of physical therapy for 6 years before going back to graduate school to study Chiropractic in St. Louis, Missouri. He graduated from Logan University in 1999 with a Doctorate in Chiropractic.
For the past 25 years, Dr. Johnston has specialized in treating patients with sports related injuries, work related injuries, and people involved in car accidents.