Best Gastroscopy with Biopsy Doctors Abroad

Dr. Watcharin Wichapolchaiyakul is a board-certified gastroenterologist and internal medicine specialist at Siriraj Hospital, Mahidol University in Bangkok. He completed a gastroenterology fellowship and internal medicine board training at Siriraj. He received his MD from the Faculty of Medicine Siriraj Hospital. He graduated with First Class Honors (GPA 3.90).

His clinical expertise includes Helicobacter pylori infection, gastric mucosal disorders, and drug-induced liver injury. He has presented research at Digestive Disease Week in Chicago. His work covers gastric microbiota in CagA-positive and CagA-negative H. pylori. It also includes gene-guided N-acetylcysteine for prevention of anti-tuberculous drug-induced hepatitis. He is a member of GAT, the AGA Institute, the Medical Council of Thailand, and RCPT.

Dr. Esteban Lopez-jamar is a pioneer in digestive endoscopy who leads the unit at Hospital Ruber Internacional. He specializes in advanced gastroscopy with biopsy for early cancer detection and complex digestive diseases.

• Heads the Digestive Endoscopy Unit at a premier hospital in Madrid
• Expertise in Barrett's esophagus – monitoring precancerous changes in the food pipe
• Pioneered endoscopic ultrasound in Spain to improve diagnostic precision
• Participates in multicenter European studies on innovative diagnostic technologies
• Member of the European Society of Gastrointestinal Endoscopy (ESGE)

Dr. Yasar Tuna is a gastroenterologist and gastrointestinal surgeon at Medical Park Antalya Hospital Complex. He specializes in the treatment of complex digestive conditions and bariatric surgery. Dr. Tuna performs procedures at a facility that houses one of Turkey's premier organ transplant centers.

• Treats chronic conditions including Crohn's disease, ulcerative colitis, and cirrhosis.
• Performs bariatric procedures such as gastric sleeve, gastric bypass, and gastric balloon.
• Member of the Turkish Society of Gastroenterology and the Endoscopy Association.
• Works at a facility that performs the most successful transplants in Turkey.

Dr. Mustafa Serkan Alemdar is a clinical oncologist at Medical Park Antalya Hospital Complex. He specializes in treating complex solid tumors and blood cancers. Dr. Alemdar completed his medical degree and oncology fellowship at Akdeniz University. He is an active member of the Turkish Society of Medical Oncology.

• Treats a wide range of cancers including breast, lung, and prostate.
• Expert in hematology-oncology for conditions like leukemia, myeloma, and lymphoma.
• Performs systemic therapies such as chemotherapy, immunotherapy, and targeted biological therapy.
• Works at a facility that houses specialized oncology-bone marrow units and LINAC technology.

Dr. Hamdi Levent Doganay is a professor and gastroenterologist at VM Medical Park Pendik Hospital. He serves on the board of the Turkish Liver Research Association. Dr. Doganay is an editor for major journals like the World Journal of Hepatology. He treats complex conditions including cirrhosis and ulcerative colitis at this JCI-accredited hospital.

• Recipient of the Gilead Fellowship Award for liver research.
• Winner of multiple national awards for achievements in viral hepatitis and proteomics.
• Member of the European and American associations for liver research.
• Performs gastroscopy, colonoscopy, and surgical removal of gastrointestinal polyps.

Dr. Cheon Wonseok is Head of Gastroenterology at Na-Eun Hospital. He treats gastrointestinal disorders. He performs upper endoscopy, colonoscopy, polypectomy, and ESD. He manages gastric and esophageal cancer and Helicobacter pylori infection. He also treats liver disease and inflammatory bowel disease, including Crohn’s disease and ulcerative colitis. He offers small-bowel capsule endoscopy.

Accreditations: Board-certified specialist in gastrointestinal endoscopy. Lifetime member, Korean Society of Gastrointestinal Endoscopy. Full member, Korean Association of Internal Medicine.

Training: Kyung Hee University College of Medicine. Internship, Kyung Hee University Medical Center. Residency in internal medicine, Hallym University Sacred Heart Hospital. Clinical fellowship in gastroenterology, Chung-Ang University Hospital.

Dr. Omer Burcak Binicier is a gastroenterologist at Medicalpoint International Hospital in Izmir. He focuses on early-stage gastrointestinal cancers and inflammatory bowel diseases. Dr. Binicier completed international training at the Korea University Faculty of Medicine. He treats complex liver, pancreatic, and digestive system disorders using manual and robotic-assisted techniques.

• Performs therapeutic endoscopy including EMR, ESD, and ERCP.
• Provides minimally invasive obesity treatments like intragastric balloons.
• Expert in endoscopic ultrasound for precise digestive tract imaging.
• Practices at JCI-accredited Medicalpoint International Hospital.

Dr. Seymur Aslanov is a gastroenterologist at Medicalpoint International Hospital in İzmir. He completed his subspecialty training at Ege University. Dr. Aslanov treats inflammatory bowel diseases, liver disorders, and digestive system cancers. He is a member of the Izmir Medical Chamber.

• Performs ERCP and endoscopic procedures to treat biliary tract diseases.
• Treats Crohn's disease and ulcerative colitis using stem cell therapy.
• Surgical expertise includes endoscopic polypectomy and stenting for gastrointestinal stenosis.
• Works at a JCI-accredited hospital with ISO and TEMOS quality certifications.

Li Guiyuan, MD, is Chief Physician in the Department of Medical Oncology at Shanghai Tongji Hospital. He has practiced oncology since 1996 and has more than 20 years of experience. He earned a master’s degree in Oncology from Nanjing University in 2003. He has worked in the hospital’s Oncology Department since then.

His clinical work includes chemotherapy for lung, breast, ovarian, and gastrointestinal cancers. He also provides targeted and anti‑angiogenic therapies for malignant tumours. He manages malignant pleural and peritoneal effusions and bone metastases with multimodal care, including immunotherapy.

He has authored more than 10 basic and clinical papers, including “Tumour Hypoxia and Its Therapeutic Strategies” and “Establishment of Tumour Model with B16 Melanoma Cell Line of C57BL/6 Mice in ICR Mice.” He received the Medical Achievement Award from the General Logistics Department of the PLA for “Research and Application of Early‑diagnosis and Prediction Model for Metastasis of Non‑small‑cell Lung Cancer.” He co‑authored “Evidence‑based Oncology Treatment” and “Handbook of Modern Evidence‑based Diagnosis and Treatment of Cancer.” He has also taken part in key projects of the National Natural Science Foundation of China.

Dr. Selin Kapan is a general surgery professor at İstinye University Liv Hospital Topkapı. She specializes in gastrointestinal surgery and laparoscopic hernia repair. Dr. Kapan has published over 50 peer-reviewed papers in international medical journals. Her research focuses on perianal fistulas and hepatic hydatid disease.

• Performs bariatric procedures including gastric sleeve and bypass surgeries.
• Expert in hernia repair using laparoscopic and robotic techniques.
• Treats complex conditions like salivary gland tumors and pilonidal disease.
• Is a member of the Turkish Surgical Association and the Hernia Society.

Dr. Sanchez Yague is a gastroenterologist at Quirónsalud Marbella in Spain. He was the first professional globally to use the 15-mm AXIOS stent. This device drains pancreatic fluid collections. He pioneered submucosal endoscopic dissection in Spain. Dr. Sanchez Yague also introduced gastroenteroanastomosis with luminal apposition stents to Andalusia.

• Fellow of the American College of Gastroenterology (FACG).
• Fellow of the American Society for Gastrointestinal Endoscopy (FASGE).
• Coauthored European Society of Gastrointestinal Endoscopy guides on chronic pancreatitis.
• Winner of the Top Reviewer Award from the Gastrointestinal Endoscopy Journal.

Dr. Irfan Cicin is a Professor of Medical Oncology at İstinye University Liv Hospital Topkapı. He specializes in treating complex cancers, including glioblastoma, lung cancer, and pancreatic tumors. He serves as a professor at the Trakya University Faculty of Medicine. Dr. Cicin previously served as a physician in the Turkish Air Force.

• Performs systemic therapies such as immunotherapy, chemotherapy, and hormone therapy.
• Treats a wide range of conditions including gynecologic, orthopedic, and neuro-oncology cases.
• Expert in HIPEC and chemoembolization for liver and abdominal malignancies.
• Works at a 300-bed university hospital with 33 medical departments.

Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at Liv Hospital Topkapı. He specializes in treating colon, breast, gastric, and lung cancers. He previously served as the Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital. Dr. Atci is a member of the American Society of Clinical Oncology (ASCO).

• Author of 19 peer-reviewed papers on gastrointestinal, thoracic, and endocrine cancers.
• Published studies on survival outcomes for stage IIB colon cancer in the Journal of Chemotherapy.
• Researches prognostic biomarkers using PET/CT scans and metabolic tumor volume.
• Treats complex oncological cases at the university-affiliated İstinye University clinic.

The doctor holds a Doctor of Medicine degree from the Faculty of Medicine, Ramathibodi Hospital, Mahidol University, earned in 2022. The professional practice is centered on general disease diagnosis, treatment, and comprehensive wellness care.

The doctor maintains specialized credentials, including certification in Anti-aging and Regenerative Medicine from the American Board of Antiaging and Regenerative Medicine (ABAARM), as well as certification in Nutritional Wellness from the American Naturopathic Certification Board (ANCB). The doctor is proficient in both Thai and English.

Dr. Yahya Ozel is a general surgeon at Estexper Clinic in Istanbul. He has performed over 12,000 procedures during his career. Dr. Ozel specializes in bariatric, metabolic, and oncological surgery. He completed training at Tokyo University Hospital in Japan. This training focused on complex liver and pancreatic surgery.

• Performed over 5,000 bariatric and 2,500 metabolic surgeries.
• Placed more than 4,000 gastric balloons for weight loss.
• Treats gastrointestinal cancers, including stomach, colon, and liver cancer.
• Holds the Turkish Surgical Proficiency Certificate.

The doctor is a highly trained general surgeon with extensive expertise in advanced laparoscopic techniques. Having completed medical education at Ondokuz Mayıs University in 1991 and specialization at KTÜ Faculty of Medicine Farabi Hospital in 1998, the doctor has pursued rigorous post-graduate training at prestigious institutions. This includes specialized certifications in laparoscopic surgery, laparoscopic antireflux procedures, and advanced bariatric surgery.

Furthermore, the doctor possesses significant clinical experience in morbid obesity management and oncological cancer surgery, having completed advanced training at Istanbul University Cerrahpaşa Faculty of Medicine. The doctor focuses on minimally invasive surgical interventions to improve patient outcomes in complex general surgery cases.

Dr. Ha Heonyoung is the Director of Naeun Hospital. He is a preventive medicine specialist with 39 years of clinical experience.

Education: MD, Hanyang University College of Medicine. Master’s and Ph.D. in Preventive Medicine, Hanyang University Graduate School.

Clinical focus: Hair Loss & Obesity Clinic for hair loss prevention, weight management, liposuction, and fat grafting. Anti-Aging & Wellness Clinic for chelation therapy and anti-aging programs. Advanced biotherapy using stromal vascular fraction (SVF) for hair loss treatment and immune system enhancement.

Dr. Hasan Mutlu is a medical oncologist at Medical Park Antalya Hospital Complex. He specializes in immunotherapy, targeted cancer therapies, and genetic research in cancer treatment. Dr. Mutlu received his medical degree from Hacettepe University. He holds the title of Professor of Medicine. Dr. Mutlu focuses on organ tumor diagnosis and chemotherapy.

• Specializes in both medical and pediatric oncology cases.
• Treats complex conditions including neuroblastoma, Wilms tumor, and Ewing's sarcoma.
• Performs biological therapies and stays active in next-generation genetic research.
• Works at the Mediterranean region’s largest private hospital with PET-CT and LINAC technology.

Dr. Jair Bar is a thoracic oncologist and Deputy Director of the Cancer Center at Sheba Medical Center. He specializes in treating advanced non-small cell lung cancer using personalized immunotherapy and targeted treatments. Dr. Bar holds a PhD in Molecular Biology and leads a research lab focused on immunotherapy resistance.

• Chair of the Israel Lung Cancer Group.
• Board-certified in both Medical Oncology and Radiotherapy Oncology.
• Treats patients at Sheba Medical Center, a top-10 globally ranked hospital.
• Uses molecular and genetic profiling to create precise cancer treatment plans.