2012-Present,
Editor, Korean Surgical Society
2008-Present,
Naver Answer Doctor [Surgeon]
2004-Present,
Thyroid cancer surgery and scar-free thyroid surgery using endoscopy: Participation in more than 2,000 surgical cases
2012,
Editor, Korean Association of Thyroid and Endocrine Surgeons Journal
2005-2007,
Medical officer, chief of surgery at Armed Forces Cheongpyeong Hospital
2004,
Fellow, Department of Breast & Endocrine Surgery, Seoul National University Hospital
2004,
Surgical Specialist