Dr. Patrick T. Koo is a California state licensed medical doctor, specializing in Gastroenterology. Graduated Magna Cum Laude from Penn State Health Milton S. Hershey Medical Center, completed residency training in UH Cleveland, and completed the Gastroenterology specialist training at UC Davis. Dr. Koo currently is working at St. Jude Heritage Medical Group, located in 1837 Sunny Crest Dr Fullerton CA 92835 Please call +1-714-446-5831 to contact. Access cdoc101.com on a desktop computer to view more details. | |||