• Chief of Dermatology Dept., The Armed Forces Gwangju Hospital
• Served as a dermatologist at Young-Woo Roh Dermatology
• Served as a dermatologist at Oracle Daejeon Branch
• Served as a dermatologist at Oracle Shincheon Branch
• Dermatologist, Oracle Apgujeong Branch
• Specialist in Dermatology
• Official Member, Korean Dermatological Association
• Official Member, Korean Society for Laser Medicine and Surgery
• Official Member, Korean Society of Aesthetic Dermatology
• Director, the Korean Hair Research Society 

• - Specialized in Oral & Maxillofacial Surgery
• - Ph.D in Implantalogy, College of Medicine, Korea University
• - Served as an adjunct professor, College of Medicine, Korea University
• - Served as a full time dentist, Wilshire Park Dental Institute in California