Dr. Holdbrook received his undergraduate degree from Rutgers University in New Brunswick, New Jersey and Doctor of Medical Dentistry degree from Temple University School of Dentistry in Philadelphia, Pennsylvania, earning the "Award for Exceptional Ability in Children's Dentistry." Dr. Holdbrook received his Certificate in Pediatric Dentistry from the Temple University Hospital, Episcopal Division, Pediatric Dentistry Residency Program where he was also awarded the "Best Clinician Award."