CT (computer tomography) in Republic of Korea: Our Best Clinics and Costs 2026

Ahn Tae Hoon, MD, PhD, is a cardiology specialist and Director of the Cardiovascular Center at Naeun Hospital. He has expertise in coronary artery disease (angina, myocardial infarction), hypertension, valvular heart disease, heart failure, and cardiovascular interventional procedures.

He earned his PhD in Medicine from Korea University College of Medicine. He completed an Internal Medicine residency at Korea University Guro Hospital and a Cardiology fellowship at Korea University Hyehwa Hospital. He also completed clinical training at the Montreal Heart Institute.

He previously served as Professor and Director of the Cardiovascular Center at Gachon University Gil Medical Center. He was a Clinical Professor at Korea University Anam Hospital and at Chung-Ang University Gwangmyeong Hospital. His leadership roles include President of KSIC, KCCC, KVIS, and KSC. He also served as Treasurer of KSC and as Organizing Committee Chair of ENCORE SEOUL.

Dr. Cheon Won Seok is the Director of the Department of Gastroenterology at Naeun Hospital. His expertise includes gastrointestinal diseases; upper gastrointestinal endoscopy and colonoscopy; polypectomy; ESD (Endoscopic Submucosal Dissection); small-bowel capsule endoscopy; digestive disorders; gastric and esophageal cancer; Helicobacter pylori infection; liver diseases; and inflammatory bowel disease, including Crohn’s disease and ulcerative colitis.

He graduated from Kyung Hee University College of Medicine. He completed his internship at Kyung Hee Medical Center and his internal medicine residency at Hallym University Sacred Heart Hospital. He later served as a Clinical Instructor in Gastroenterology at Chung-Ang University Hospital. He is a full member of the Korean Association of Internal Medicine and a life member of the Korean Society of Gastrointestinal Endoscopy. He is also a board-certified subspecialist in gastrointestinal endoscopy and serves as a medical advisor to KBS, MBC, SBS, JTBC, and MBN.

Yang Young-Joon, MD, is an orthopedic surgeon and Director of the Joint Center. He treats knee and shoulder disorders, sports injuries, foot and ankle problems, carpal tunnel syndrome, and fractures and other trauma. His practice also includes joint replacement, arthroscopic surgery, pediatric orthopedics, hip disorders, hand and foot microsurgery, hand numbness, diabetic foot, hallux valgus, and gout.

He completed his orthopedic surgery residency at Catholic Central Medical Center and an orthopedic surgery fellowship at St. Paul’s Hospital at Catholic Central Medical Center. He is a regular member of the Korean Arthroscopy, Knee, and Shoulder Societies and serves as Director of the Orthopedic Center at Naeun Hospital.

Lee Sang‑Gu, MD, PhD, is the Honorary Director of Neurosurgery at Naeun Hospital. He treats spinal tumors and disorders. His work includes minimally invasive spine surgery, cervical spine conditions, head trauma, and disability and impairment evaluation.

He previously served as Chief of Neurosurgery at Korea Veterans Hospital. He was also Director and Professor of Neurosurgery at Gachon University Gil Medical Center. He is President of the Korean Spinal Cord Society. He is a former president of KOMISS, the Korean Medical Appraisal Society, and the Korean Peripheral Nerve Society. He has served as Executive Director of the Korean Neurosurgical Society, the Korean Neurotraumatology Society, and the Korean Spinal Neurosurgery Society. He was listed in Marquis Who’s Who in 2010. He is an AOSpine Asia Pacific committee member and a full member of NASS. He earned his MD and PhD from Hanyang University.