- Resident at Yonsei Medical Center Severance Hospital
- Clinical assistant professor at Yonsei University Health System Severance Hospital
- Infection Control Department Director, Catholic Kwandong University International St. Mary's Hospital
- Director, Department of Allergy, Catholic Kwandong University International St. Mary's Hospital
- Professor at Catholic Kwandong University International St. Mary's Hospital
- Current) General Affairs Director, Gyeonggi-Incheon Branch of the Korean Asthma and Allergy Society
- Current) Planning Committee Member of the Korean Society of Internal Medicine
- Current) Secretary of the External Cooperation Committee of the Korean Asthma and Allergy Society / Member of the Ethics Committee
- Current) Member of the Korea Health and Medical Information Service Certification Standards Advisory Committee
- Current) Regional Advisory Committee Member, Regional Drug Safety Center, Inha University Hospital