- Cedars Sinai Hospital Fellow
- Cardiologist, Sinchon Severance Hospital
- Myongji Hospital cardiology specialist
- Director of Intensive Care Unit at Catholic Kwandong University International St. Mary's Hospital
- Director of the Cardiovascular Center at Catholic Kwandong University International St. Mary's Hospital
- Associate Professor, Catholic Kwandong University International St. Mary's Hospital
- Yonsei Medical Journal Editorial Reviewer
- Editorial reviewer of the Korean Society of Echocardiography
