Dr. HyunSung Park, internist in Seoul

About Dr. HyunSung Park, internist in Seoul

Dr. HyunSung Park is the medical director of VEI Clinic (베이의원) in Apgujeong, Gangnam. As an internist in Seoul, he sees patients for everyday medical problems, ongoing conditions and preventive care, and many of his patients are expats, business travelers and visitors who want a doctor who explains things clearly in English.

He has treated patients in Korea since 2010. He previously served as a clinical professor at Dongguk University Ilsan Hospital.

His training combines internal medicine with a subspecialty in gastroenterology, which shapes much of his practice: many patients come with digestive symptoms, metabolic concerns, or a general feeling that something is not right that has not been explained elsewhere. His U.S. education and ECFMG certification also mean he is familiar with how patients from North America and elsewhere expect care to be explained and documented.

Credentials

ECFMG certification is a U.S. credential for internationally trained physicians. Dr. Park practices medicine in Korea under his Korean medical license.

• Board-certified internal medicine specialist (Korea)
• Gastroenterology subspecialist
• ECFMG certified (Educational Commission for Foreign Medical Graduates, United States)
• Graduate, State University of New York
• Former clinical professor, Dongguk University Ilsan Hospital
• Member, International Society for Stem Cell Research (ISSCR)
• Member, American Gastroenterological Association
• Member, Korean Institute of Functional Medicine

Clinical focus

Dr. Park's day-to-day practice centers on four areas:

Alongside these areas, he provides everyday primary care: colds, coughs, fevers, urinary infections, allergies, vaccinations including flu shots, and physical examinations for work or study.

• Gastrointestinal health: reflux, abdominal pain, bloating, H. pylori, SIBO and gut-related symptoms, with abdominal ultrasound in clinic and hospital referral for endoscopy when needed
• Metabolic health: blood pressure, cholesterol, blood sugar, fatty liver, thyroid and medical weight loss
• IV and functional medicine: medically screened IV therapy and nutrient testing, with honest discussion of where evidence is limited
• Longevity and preventive care: risk-based checkups, follow-up re-testing and consultation-based regenerative medicine

How he approaches care

Dr. Park's view is that a symptom is a signal, and that relieving it without asking what is causing it often means it comes back. In practice, that means a careful history, targeted tests and a plan that addresses the underlying driver, whether that is diet, sleep, a gut problem or a metabolic condition, alongside treatment that makes you feel better now.

He also believes patients should understand their own results. Consultations are 1:1, and he takes time to explain options, including when a test or treatment is not worth doing, and when you need a hospital instead. When surgery, endoscopy or emergency care is required, he refers patients to an appropriate hospital.

In consultations, he aims to give patients a clear explanation of what is likely going on, what the options are, and what each option involves in terms of benefit, risk and cost. Where the evidence for a treatment is limited, as with many wellness IV drips or regenerative treatments, he says so plainly, so patients can decide with realistic expectations.

For patients living abroad or traveling, he will often plan visits so that tests and treatment can be completed within a short stay, with results and next steps discussed remotely afterwards. On request, he provides English summaries that a patient's doctor at home can use to continue care.

Languages

Dr. Park consults in Korean and English. Written reports and medical documents for insurance can be provided in English on request.

Patients often find it helpful to bring notes or questions written in advance, particularly for complex problems. Family members may join the consultation, and Dr. Park can switch between Korean and English when a mixed-language family is present.

How Dr. Park reviews this website

Medical pages on this site are written for patients and then reviewed by Dr. Park for accuracy, safety and balance before publication. He checks that statements match current clinical guidelines and product labels, that risks and evidence limits are stated honestly, and that red-flag advice is included where symptoms are discussed. Pages are reviewed again when guidelines change. Our medical review policy explains the full process.

If you notice something on this site that seems inaccurate or out of date, the clinic welcomes corrections, which are passed to Dr. Park for review. His review does not replace a consultation: general information cannot take account of your own history, medicines or examination.