- Seoul National University Hospital trainee
- Resident, Department of Pediatrics, Seoul National University Children's Hospital
- Clinical instructor, Department of Endocrinology and Metabolism, Department of Pediatrics, Seoul National University Children's Hospital
- Clinical Assistant Professor, International St. Mary’s Hospital, Catholic Kwandong University
- Member of the Korean Academy of Pediatrics and Adolescent Sciences
- Member of the Korean Society of Pediatric Endocrinology
