Board Certified in Endocrinology. After completing his training at The Universidad Nacional de Asuncion in Paraguay, he finished an Internal Medicine Residency and a Fellowship in Endocrinology at St. Luke’s-Roosevelt Hospital Center in New York City, a teaching Hospital of Columbia University College of Physicians and Surgeons. In 2004 he joined a private practice in Peoria. In 2006 he became a member of the team at Arizona Endocrinology Center. Dr. Chong is also fluent in Korean and Spanish.