- Professor at Obesity Clinic of Yonsei University Severance Hospital - Fellow/Specialist at Department of Family Medicine of Yonsei University Severance Hospital - Advertisement Director at Korean Bar Association - Full member of the Korean Society for the Study of Obesity and Health - Full member of the Korean Academy of Aesthetic Medicine - Full member of the Doctor's Association of Obesity Research - Full member of the Korean Aesthetic Surgery & Laser Society - Full member of the Korean Academy of Obesity & Aesthetic Treatment

- Full member of the Korean Society for the Study of Obesity and Health - Full member of the Korean Academy of Aesthetic Medicine - Full member of the Doctor's Association of Obesity Research - Graduated from Seoul National University

- Full member of the Korean Aesthetic Surgery & Laser Society - Full member of the Korean Academy of Obesity and Aesthetic Treatment - Graduated from Konkuk University

- Full member of the Korean Aesthetic Surgery & Laser Society - Full member of the Korean Academy of Obesity and Aesthetic Treatment - Graduated from Washington University in St.Louis, major in biochemistry - Graduated from Yonsei University, school of medicine