Dr. O’Brien has been working in private practice caring for infants, children, adolescents, and young adults since 2001. He is a board certified Pediatrician by the American Board of Pediatrics. He graduated summa cum laude from Bucknell University in 1993 and attended the University of Medicine and Dentistry of New Jersey – New Jersey Medical School, graduating in 1997. He completed his pediatric residency in 1997 and served as Pediatric Chief Resident in 1998. He joined Advocare TLC Pediatrics in January of 2019. In his spare time he enjoys spending time with his wife and children and coaching youth sports.