Prof. Keun Chil Park, MD is a hematologist-oncologist who graduated from Seoul National University College of Medicine. He specializes in lung, head and neck, and esophageal cancer and is a member of multiple professional organizations, including the Korean Medical Association, the Korean Association of Internal Medicine, the Korean Cancer Association, the American Society of Clinical Oncology, the American Association for Cancer Research, the European Society of Medical Oncology, the International Association for the Study of Lung Cancer, and the Korean Association for Clinical Oncology.