- Clinical instructor at Gangnam Severance Hospital
- Director of Breast Center at Gangseo Mizmedi Hospital
- University Of Texas MD Anderson Cancer Center
- Director of Outpatient Clinic, International St. Mary's Hospital, Catholic Kwandong University
- Director of Strategic Planning, Catholic Kwandong University International St. Mary's Hospital
- Professor at Catholic Kwandong University International St. Mary's Hospital
- Korean Society of Surgical Infectious Diseases
- Korean Surgical Society
- Korean Breast Cancer Society
- Korean Lymphedema Society
