Endocrinologist
2014 : The world's first robotic oral thyroidectomy developed by Kim Hoon-yub
2011 ~ : Fellow of the International Society of Neuro Monitoring Research
2008 ~ : Permanent member of Korean Society of Endoscopic & Laparoscopic Surgeons
2008 ~ : Permanent member of Korean Society of Surgical Oncology
2008 ~ : Permanent member of the Asia Oceania Thyroid Association
2014 ~ : Research Professor, the Korean Society of Endoscopic & Laparoscopic Surgeons
2014 ~ : Member of planning Committee at the Korean Association of Thyroid and Endocrine Surgeons, member of the Medical Rights Advisory Committee
2012 ~ : Member of the International Surgery Research Forum
2015 ~ : Member of the American Thyroid Association
2015 ~ 2016: Research Professor, Division of Head and Neck Surgery, Johns Hopkins University School of Medicine, USA