Dr. Koh is a graduate of The University of Texas School of Dentistry at Houston and completed General Practice Residency Program in the school's program based at Memorial Hermann Hospital. She is a Tenured Professor in the Department of General Practice and Dental Public Health and Director of Special Patient Clinic. She helped initiate the AEGD (Advanced Education in General Practice) program and served as Director from 1999-2003. She is a member of the Academy of General Dentistry and American Dental Education Association. Dr. Koh is a Master of Academy of General Dentistry and Fellow of International College of Dentists and Delta Sigma Delta.