Best Colonoscopy Doctors Worldwide — TOP 205

Professor Ahmet Melih Ozel is a gastroenterology specialist at Anadolu Medical Center. He specializes in advanced endoscopic interventions and inflammatory bowel disease treatment.

• Performs colonoscopy for diagnostic and therapeutic bowel care
• Specializes in removing gastric polyps during endoscopic procedures
• Expert in managing Crohn's disease and ulcerative colitis
• Member of the European Society of Gastrointestinal Endoscopy (ESGE)
• Former Professor of Gastroenterology at Maltepe University

Dr. Vafi Atalay is a colorectal and general surgeon at Anadolu Medical Center. He developed the tube ileostomy technique to eliminate the need for ostomy-closure surgery. This method was published in the journal Colorectal Disease. Dr. Atalay specializes in pancreatic, colon, rectal, and liver cancers.

• Winner of the Gold Medal Award at the Istanbul International Invention Fair.
• Authored over 30 articles in national and international medical journals.
• Received the Best Scientific Research Award from several surgical congresses.
• Practices at a clinic affiliated with the top-ranked Johns Hopkins Hospital.

Dr. Pichai Kittipanyaworakul is a gastroenterologist and hepatologist at Navamin 9 Hospital in Bangkok. He earned his medical degree from Chiang Mai University. Dr. Kittipanyaworakul holds a diploma in gastroenterology and hepatology from Mahidol University, a top-tier Thai institution. He works at a JCI-accredited facility that treats 30,000 patients every year.

• Specializes in treating complex liver conditions like chronic Hepatitis B and C.
• Performs specialized procedures including stomach resection and gastric polyps removal.
• Manages autoimmune digestive disorders, Crohn's disease, and ulcerative colitis.
• Offers diagnostic screenings like gastroscopy with biopsy and transnasal endoscopy.

Dr. Thanaphat Pomyukon is a gastrointestinal and general surgeon at Mali Interdisciplinary Hospital in Bangkok. He earned his medical degree from the prestigious Chulalongkorn University. Dr. Pomyukon holds a Thai Board Diploma in General Surgery from Roi Et Hospital. He treats digestive system diseases, breast lumps, and gallstones.

• Specializes in surgical repair for hernias and hemorrhoid treatment.
• Performs gastrointestinal endoscopy, including gastroscopy and colonoscopy.
• Practices at Mali Interdisciplinary Hospital, which holds American AACI accreditation.
• Works within a gastro-colonoscopic unit at a GHA-accredited facility.

Dr. Abdulcabbar Kartal is a certified Fellow of the European Board of Surgery. He treats complex gastrointestinal conditions and performs advanced screenings at Anadolu Medical Center.

• Holds a Surgical Endoscopy Training Certificate for precise internal evaluations
• Completed advanced training in interventional endoscopic procedures
• Expert in colorectal surgery and metabolic disorders
• Certified in ERCP and endosonography for detailed digestive tract imaging
• Member of the European Society of Coloproctology, ensuring high standards in bowel health

Professor Christoph Zielinski leads the International Oncology Center at Wiener Privatklinik. Colonoscopy results here support personalized cancer immunotherapy and tumor biology research.

• Chairman of the Vienna Cancer Center and founder of the Comprehensive Cancer Center Vienna
• Published over 600 scientific papers on cancer diagnostics and targeted drug therapies
• Former President of the Central European Cooperative Oncology Group
• Researcher at the Cancer Research Center at Tufts University in the USA
• Fellow of the American Society of Clinical Oncology and European Society for Medical Oncology

Dr. Camel Kopty performs screening colonoscopies at Wiener Privatklinik. He is an internal medicine specialist and oncologist who trained at the Medical University of Vienna.

• Checks for gastrointestinal malignancies and performs biopsies for precise diagnosis
• Removes gastric and duodenal polyps during endoscopic procedures
• Treats complex conditions like ulcerative colitis and cirrhosis
• Interprets tumor markers and imaging to monitor digestive health
• Specializes in systemic therapies for solid tumors and blood disorders

Dr. Sun Guangxi is a gastroenterologist at Shanghai Tongji Hospital. He has performed thousands of painless gastroscopy and colonoscopy procedures. He specializes in the early detection and minimally invasive treatment of digestive cancers. Dr. Sun is a member of the Chinese Medical Association’s Digestive Endoscopy Society.

• Specializes in painless endoscopy using intravenous sedation for high-precision lesion detection.
• Performs endoscopic mucosal dissection (ESD) and complex polyp removals.
• Uses hand-drawn diagrams to explain clinical findings to his patients.
• Treats gastrointestinal conditions like ulcerative colitis, Crohn’s disease, and Barrett's esophagus.

Dr. Mehmet Guler is a professor and general surgeon at Medical Park Antalya Hospital Complex. He specializes in bariatric and metabolic surgery for obesity and type 2 diabetes. Dr. Guler uses the Da Vinci robotic system for precise gastric sleeve and bypass procedures. He holds a Master's degree in Health Law and a degree in Public Administration.

• Member of the Turkish Society for Obesity Surgery and the World Association of Laparoscopic Surgery.
• Performs robotic-assisted gastroectomy and endoscopic sleeve gastroplasty.
• Treats complex gastrointestinal conditions including Crohn’s disease and ulcerative colitis.
• Practices at the largest private hospital in the Mediterranean region.

Chief physician and professor. Grade 1 Expert at the Cancer Center, West China Hospital, Sichuan University (ranked No. 2 in China). Completed a postdoctoral fellowship in interventional radiology at the Chinese PLA General Hospital. Leads multidisciplinary team (MDT) care for complex tumors. Expert in minimally invasive interventional oncology for liver, lung, and pancreatic cancers.

Accreditations: Council Member, WATA. Member of CACA and CMDA committees on intervention, ablation, radioactive seeds, and pain. In 2023, inaugural director member, Palliative Care Committee, Sichuan MDA. Editorial board member of the Chinese Journal of Interventional Imaging and Therapy. Editorial board member of the Chinese Journal of Pain Medicine.

Leads 2 provincial S&T projects and 2 NSFC projects. Has 40+ papers, with 30+ as first or corresponding author. Highest impact factor: 10.73. Hepatocellular carcinoma (HCC) cohort: TACE + lenvatinib vs TACE + sorafenib. OS 18.97 vs 10.77 months. PFS 10.6 vs 5.4 months. ORR 66.8% vs 33.3%.

Professor Onder Surgit is a senior surgeon at Optimed International Hospital. He specializes in cancer surgery and laparoscopic methods during colonoscopy procedures.

• Holds the rank of Professor at Atilim University Faculty of Medicine
• Serves as an instructor surgeon at the Advanced Medical Technologies Training Center
• Trained at Hacettepe Faculty of Medicine, a top-ranked medical school in Turkey
• Focuses on cancer surgery and minimally invasive laparoscopic techniques

Dr. Enes Duman is an Associate Professor of Interventional Radiology at Medical Park Antalya Hospital. He specializes in neurovascular procedures and endovascular treatments for cerebral aneurysms. Dr. Duman holds training from Ankara University and Baskent University. He previously served as a lecturer and researcher in Interventional Radiology.

• Performs endovascular treatment of wide-necked saccular aneurysms using flow-diverter stents.
• Researches laser wavelength effects on pain during saphenous vein ablation.
• Treats complex conditions at the largest private hospital in the Mediterranean region.
• Expert in minimally invasive diagnostics including angiography, CT, and MRI.

Dr. Rana Niftaliyeva is an oncologist-mammologist at the Biological Medicine Integrative Health Center in Baku. She specializes in breast cancer treatment and precancerous mammary gland diseases. Dr. Niftaliyeva has participated in medical conferences across Azerbaijan, Germany, and Turkey. She focuses on integrative approaches to cancer care.

• Treats large breast cysts using non-surgical aspiration techniques.
• Provides mistletoe therapy and high-dose vitamin C cancer treatments.
• Manages side effects of chemotherapy and radiation through supportive care.
• Performs biopsies and hormonal therapy for various oncological conditions.

Dr. Hana Golan heads the Pediatric Hemato-Oncology and Bone Marrow Transplantation Division at Sheba Medical Center. She specializes in high-risk pediatric tumors and complex childhood cancers. Dr. Golan serves as the principal investigator for the High-Risk Neuroblastoma ESIOP protocol. She practices at a hospital ranked among the global top 10 by Newsweek.

• National coordinator of multicenter oncology protocols and international Phase I/II clinical trials.
• Performs bone marrow transplants and CAR T-cell therapy for pediatric patients.
• Expert in neuroblastoma, leukemia, and treatment-resistant malignancies.
• Senior Lecturer at the Sackler Faculty of Medicine at Tel Aviv University.

General and laparoscopic surgeon with more than 10 years of specialist practice in bariatric and general surgery. Trained in General Surgery at the University of Tehran (2012–2016). Head of Hospital and Surgery, Arman International Hospital (2022–present). Previously led surgical units at International Hospital of Tabriz (2012–2016), Erfan Niayesh (2019–2022), and Tandis (2022–2024).

Member of IFSO (2020–present). Peer reviewer for the Journal of Clinical Medicine (2020–present) and the Journal of Obesity Science and Practice (2021–present). Publications from 2022 to 2023 on bariatric outcomes, metabolic health, and postoperative care. Advanced training includes the Pudong‑Duke minimally invasive bariatric surgery program (2017) and the Harvard Blackburn Course in Obesity Medicine (2020).

Professor Luo Xiaoping is a nationally recognized interventional radiologist and a leading authority in Western China. He began pioneering vascular interventions in the early 1990s. He helped found the Interventional Group at the Second Affiliated Hospital of Chongqing Medical University.

He has completed over 100,000 interventional procedures, including about 4,000 complex cases. His key skills include TACE for hepatocellular carcinoma, Budd–Chiari interventions, TIPS, and single-stage bilateral stenting for hilar biliary obstruction, with success rates near 100%. He has been a master’s supervisor since 2007. He has trained many physicians, guided complex cases at more than 40 major hospitals across Western China, and helped build interventional programs. He has published 32 papers as first or corresponding author (22 CSCD core, 4 Chinese core, 6 CSCD extended).

Dr. Zhang Rong Chun directs the gastroenterology department at Xiamen Humanity Hospital. He is a leading authority in digestive endoscopy and colonoscopy procedures.

• Performed endoscopic tumor resections for gastrointestinal cancers
• Expert in diagnosing pancreatic and biliary tract diseases
• Specializes in treating acute abdominal conditions using endoscopy
• Served as a senior specialist at Xijing Hospital
• Standing committee member of the Digestive Endoscopy association

Dr. Emine Yildirim is an associate professor of general surgery at Atlas University Hospital, Istanbul. She specializes in surgical oncology with a focus on breast cancer treatment and reconstruction. Dr. Yildirim has published over 15 scientific articles in peer-reviewed journals like Academic Radiology. She holds multiple international certificates in breast cancer surgery and nipple-sparing techniques.

• Performs breast-conserving surgery, free flap reconstruction, and implant-based breast augmentation.
• Treats complex oncological conditions including thyroid, bladder, and colorectal cancers.
• Completed medical residency at Istanbul Haseki Health Application and Research Center.
• Works at AACI-accredited Atlas University Hospital, which treats 565,000 patients annually.