He attended Harvard Medical School and subsequently trained at Children's Hospital Boston for residency. Clinical interests for Dr. Koh include immunodeficiency, leukemia, and sickle cell disease. Dr. Koh honors Blue Cross/Blue Shield, Blue Choice, and Blue Cross Blue Shield Bronze, in addition to other insurance carriers. Awards and/or distinctions he has received include Eleanor and Miles Shore Scholar; Glaser Pediatric Research Network Fellowship Award; and Rhodes Scholarship. Dr. Koh's hospital/clinic affiliations include Children's Health (Texas) and UT Southwestern Medical Center.