- Severance Associate Professor
- Associate Professor, Ewha Womans University Hospital
- Associate Professor & Professor, Inha University Hospital
- Standing Appraiser, Korea Medical Dispute Mediation and Arbitration Board
- Specialist at Ansan Hospital of Korea Workers’ Compensation and Welfare Service
- Medical professor at Catholic Kwandong University International St. Mary's Hospital
- Honorary Chairman of the Korean Cervical Spine Research Association
- Honorary Chairman of Korean Spine Neurosurgery
