2016-Present,
PR Director, Konkuk University Medical Center
2011-Present,
Chief, Department of Laboratory Medicine, Konkuk University Medical Center
2009-Present,
Professor, Department of Laboratory Medicine, Konkuk University Medical Center
2012-2016,
Director, Referral Center, Konkuk University
2009-2014,
Associate professor, Department of Laboratory Medicine, Konkuk University Medical Center
2001-2009,
Clinical instructor, full-time instructor, assistant professor, Department of Laboratory Medicine, Hallym University Hangang Sacred Heart Hospital
2007,
Visiting professor, Test Department, Kyushu University Hospital, Japan
2000-2001,
Fellow, Department of Laboratory Medicine, Seoul National University Hospital
1996-2000,
Resident, Department of Laboratory Medicine, Seoul National University Hospital
1994-1995,
Intern, Seoul National University Hospital
