Stephen grew up in Hot Springs, Arkansas. After graduating from high school, he went on to the University of Arkansas to study microbiology, graduating with a 4.0 GPA in 2001. With a diploma in hand, Stephen went on to the University of Tennessee College of Dentistry in Memphis and graduated in 2005. Directly following graduation, Stephen completed an Advanced Education in General Dentistry residency.
In 2015, after a decade of general practice, Stephen attended the University of Missouri, Kansas City School of Dentistry to specialize in endodontics. Stephen completed his residency in 2017, and ultimately moved back to Hot Springs. Hot Springs Endodontics was the culmination of the partnership between Stephen Harrison and Bruce Gaston.