He was educated and trained at Seoul National University. He is a Managing Editor of Journal of Endocrinology (JES), Secretary of Korea Intraoperative Neural Monitoring Society (KINMoS), and Korean Society of Head and Neck Oncology (KSHNS). He is also an Editorial Board of Clinics in Oncology Journal - Head and Neck Oncology; an active Member of International Society of Oncoplastic Endocrine Surgeons (ISOPES), and Intraoperative Neural Monitoring Study Group (IONMSG). His major interest is endocrine surgery of thyroid, parathyroid, and adrenal glands. He is also interested in molecular biology of thyroid cancer and gave oral presentation at the annual meeting of American Association of Endocrine Surgeons (AAES) in 2014 and 2016 respectively. He has published more than 40 SCI(E) papers and 3 textbooks.