- Full-time doctor, Department of Family Medicine, Korea University Guro Hospital
- Associate Professor, Catholic Kwandong University International St. Mary's Hospital
- ‘Recognized specialist in geriatric medicine’ by the Korean Society of Clinical Geriatrics
- Korean Society of Hospice and Palliative Care ‘Hospice and Palliative Care Recognized Doctor’
- Recognized as a specialist in obesity by the Korean Society of Obesity
- Korean Society of Ultrasound Medicine ‘Ultrasound Certification'
