- Severance Hospital clinical instructor
- Severance Hospital clinical research assistant professor
- Deputy Director, PI, Catholic Kwandong University International St. Mary's Hospital
- Director of Planning and Coordination, Catholic Kwandong University International St. Mary's Hospital
- Department of Gastroenterology, Catholic Kwandong University International St. Mary's Hospital
- Associate Professor, Catholic Kwandong University International St. Mary's Hospital
- Outstanding Teacher Award for the First Half of Fiscal Year 2015
