Dr. Yookyeong Sim, Director
Yaan Clinic · Gangnam, Seoul
Dr. Yookyeong Sim is a Director of Yaan Clinic in Gangnam, Seoul, and a Board-Certified Obesity Specialist of the Korean Society for the Study of Obesity. A Princeton University graduate, Dr. Sim trained as a resident and clinical fellow at Seoul National University Hospital and was formerly a Clinical Professor at Asan Medical Center.
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Dr. Yookyeong Sim
Director
Yaan Clinic · Samseong-dong, Gangnam, Seoul
Dr. Yookyeong Sim is a Director of Yaan Clinic, an aesthetic clinic in Samseong-dong, Gangnam, Seoul. At Yaan Clinic in Gangnam, Seoul, Dr. Sim is described as an aesthetic-focused medical doctor and holds board certification as an obesity specialist from the Korean Society for the Study of Obesity (KSSO).
At a glance
| Role | Director of Yaan Clinic |
|---|---|
| Certification | Board-Certified Obesity Specialist, Korean Society for the Study of Obesity |
| Education | Graduate of Princeton University (USA) |
| Hospital training | Resident and Clinical Fellow, Seoul National University Hospital |
| Treatments at Yaan | Confirmed at consultation |
In Dr. Sim's words: "Through relentless research, we design confident beauty."
Who is Dr. Yookyeong Sim?
Dr. Yookyeong Sim is a Director at Yaan Clinic with academic hospital experience: resident and clinical fellow at Seoul National University Hospital, then Clinical Professor at Asan Medical Center, before directing L'Medique.
Dr. Sim's society memberships span laser medicine, aesthetic and functional medicine, and aesthetic surgery. Membership of the Korean Society for Laser, Dermatology, and Trichology does not make a doctor a dermatologist, and Dr. Sim is not presented as one.
What are Dr. Yookyeong Sim's credentials?
The credentials below are reproduced as Yaan Clinic lists them on its medical staff page.
- Director of Yaan Clinic
- Former Director, L'Medique
- Former Clinical Professor, Asan Medical Center
- Former Clinical Fellow, Seoul National University Hospital
- Former Resident, Seoul National University Hospital
- Graduate of Princeton University (USA)
- Board-Certified Obesity Specialist, Korean Society for the Study of Obesity
- Full Member, Korean Society for Laser, Dermatology, and Trichology
- Full Member, Korean Society of Aesthetic and Functional Medicine
- Full Member, Korean Society of Aesthetic Surgery and Laser Medicine
- Full Member, Korean Society of Functional Medicine
Which treatments can I discuss with Dr. Sim?
Yaan Clinic does not publish a list of Dr. Sim's individual treatments. You can discuss any of Yaan's face and body treatment areas at consultation.
For body concerns, Yaan's options include fat-dissolving injections, the double chin treatment and Ulfit body lifting. For the face, see the aesthetic treatment hub. Meet the full team on our doctors page.
For international patients: You can request a consultation by WhatsApp or the international line on +82 10 5308 0499, or by email at yaan09@naver.com. Interpreters in English and Chinese are available. See how to book an appointment at Yaan Clinic.
Frequently asked questions
What is a Board-Certified Obesity Specialist?
In Dr. Sim's case, it is a certification from the Korean Society for the Study of Obesity (KSSO), the Korean professional society for obesity medicine. It is a separate credential from dermatology; Dr. Sim is not presented as a dermatologist.
Where did Dr. Yookyeong Sim train?
Yaan Clinic lists Dr. Sim as a graduate of Princeton University (USA), a former resident and clinical fellow at Seoul National University Hospital, and a former Clinical Professor at Asan Medical Center.
Can I book a consultation with Dr. Sim?
Yes. Ask for Dr. Sim when you contact Yaan Clinic by WhatsApp or the international line on +82 10 5308 0499, or by email at yaan09@naver.com. The clinic confirms availability.
Related pages
Book a consultation at Yaan Clinic
WhatsApp / international line: +82 10 5308 0499 · KakaoTalk · Email: yaan09@naver.com
English & Chinese interpreters · Same prices as local patients · How to book
About this information: Prepared from Yaan Clinic's published treatment information. Treatments at Yaan Clinic are performed by licensed physicians — meet our doctors. Last updated: October 2026. This page is general information, not a substitute for an in-person medical consultation; suitability, dosage and results are confirmed by your doctor.
