Dr. Ayhan Levent is an internal medicine specialist and assistant professor at NP Istanbul Brain Hospital. He has worked there since 2020. He graduated from the Dokuz Eylül University Faculty of Medicine in 2011. In 2013, he passed the Medical Specialization Examination and began his internal medicine residency at Haseki Training and Research Hospital.
He began his career at the Sultanbeyli Community Health Center. He volunteered during the 2011 Van earthquake. In 2017, he was appointed an internal medicine specialist at Sancaktepe Training and Research Hospital. He completed his state service obligation in 2020.
100+ academic publications – Dr. Ergul pioneers innovative endoscopic treatments like POEM surgery at Lokman Hekim University Ankara Hospital.
Dr. Ozden Gul is a general surgeon trained at Istanbul University Cerrahpaşa Faculty of Medicine. She completed her general surgery residency at Haydarpaşa Numune Training and Research Hospital. She has decades of surgical experience and is fluent in English.
Her practice includes gastrointestinal surgery (gallbladder disease, hernias, appendicitis, GI disorders). She also treats endocrine conditions (thyroid, parathyroid, adrenal) and breast disease, both benign and malignant. She manages emergency and trauma cases. She offers minimally invasive laparoscopic surgery.
She has worked at Haydarpaşa Numune, Bakırköy, Taksim First Aid, Uzunköprü State, Keşan State, Beykoz Medical Center, and Medivia Hospital. She is known for meticulous technique and patient-centered care.
Prof. Dr. Aytaç ATAMER was born on January 31, 1964 in Adapazarı. He started his medical education at Istanbul University Istanbul Faculty of Medicine and graduated in 1987. After completing his residency training at Dicle University Faculty of Medicine, Department of Internal Medicine, Atamer worked as a specialist physician at the Social Insurance Institution (SSK) Diyarbakır Hospital. He then continued to work as a specialist physician at Diyarbakır Training and Research Hospital.
In 2008, he completed his upper specialization at Haydarpaşa Numune Training and Research Hospital Gastroenterology Clinic and in the same year, he was named Associate Professor of Internal Medicine at Haydarpaşa Numune Training and Research Hospital. In 2011, he continued his duty with the duty of establishing Yalova State Hospital Gastroenterology Clinic and compulsory service and in 2013, he became a faculty member at Yalova University. Between 2017 and 2022, he worked as a Professor at Çamlıca Erdem Hospital Gastroenterology Clinic.
Since 2022, he has been working as a Gastroenterology Specialist and Internal Medicine Specialist at NPISTANBUL Brain Hospital.
20 top ranked Gastroenterology doctors in the world are represented on this page. The list includes only verified specialists known for their experience and high success rates.
The ranking is composed according to the Bookimed patient reviews and considers the rating of hospitals where doctors practice.
Top 5 Gastroenterology doctors on Bookimed.com:
The specialist’s CV contains details about the doctor’s expertise and work experience, education, scientific research, and languages spoken. Compare information on several specialists, read carefully about their experience, success rates, and methods they apply. Make sure the chosen doctor has relevant experience in the treatment of a medical issue you are looking for. Read reviews of patients who had a consultation with the chosen specialist.
Famous Gastroenterology doctors have vast experience, continue education constantly, participate in professional associations and have positive feedback from patients treated.
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Education and Specialization
Experience
Education and Specialization
Professional Memberships
• Turkish Medical Association
• Mediterranean Health Foundation
• Akdeniz University Development and Health Foundation
• Transplantation Organizations Coordination Association
• National Surgical Association
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1,100+ procedures performed – Dr. Ozlem Ozer Chakir specializes in advanced endoscopic techniques at Istanbul Florence Nightingale Hospital.
2005 – M.D., Istanbul University, Istanbul Faculty of Medicine
2010 – Internal Medicine Specialization, Haseki Training and Research Hospital
2021 – Gastroenterology Subspecialty Training, Sakarya University Faculty of Medicine
Assistant Professor, Istanbul Florence Nightingale Hospital
Assistant Professor, Istanbul Bilim University Faculty of Medicine
Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine
Head of Department, Giresun University Faculty of Medicine
Dr. Acar has authored over 20 international peer-reviewed articles in the fields of internal medicine and gastroenterology. Her notable contributions include studies and case reports on:
Gastrointestinal bleeding management in anticoagulant users
Rare GI cases such as bezoars, aortoesophageal fistulas, and massive hemorrhagic ascites
Liver transplantation complications, including graft-versus-host disease
The role of (pro)hepcidin in IBD-related anemia
Endoscopic interventions for acute GI bleeding
Covid-19 treatment agents and their GI implications in Turkey
(Full publication list available upon request)
Gastrointestinal bleeding & endoscopic procedures
Hepatology & liver disease management
Inflammatory bowel diseases (IBD)
Complex GI case diagnostics
Post-transplant GI complications
Diabetic GI and cardiovascular comorbidities
Professor Benal Buyukgebiz specializes in pediatric gastroenterology with over 20 years of experience, focusing on children's digestive health at Istanbul Florence Nightingale Hospital.
Education
Ondokuz Mayıs University Faculty of Medicine (1991)
KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)
Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
900+ advanced endoscopic procedures performed – Dr. Akar specializes in minimally invasive techniques like POEM and ESD at Hisar Hospital Intercontinental.
1,100+ gastroenterology procedures performed – Dr. Koçak specializes in complex liver and gastrointestinal conditions at Emsey Hospital.
Assoc. Prof. Dr. Ugur Korkmaz brings 15+ years of specialized expertise in Gastroenterology, with a focus on complex digestive disorders and advanced endoscopic techniques.
| Doctor | experience | Good Fit For | What Sets Them Apart | Clinic & Location | Consultation |
|---|---|---|---|---|---|
| 22 years of experience | Advanced endoscopic procedures | Pioneer in innovative POEM surgery with documented success. Authored 100+ academic publications, focusing on minimally invasive techniques and patient-centered care. | Turkey | Price on request
| |
| 12 years of experience | Advanced endoscopic procedures | Specializes in advanced and bariatric endoscopy with international training in Korea and Brazil. Awarded Rising Star for digestive disease expertise. | Turkey | Price on request
| |
| 32 years of experience | Pediatric digestive disorders | Specializes exclusively in pediatric gastroenterology with academic leadership and published research on childhood digestive conditions. Former department chair at Yeditepe University. | Turkey | Price on request
| |
| 22 years of experience | Advanced endoscopic procedures | Specializes in cutting-edge POEM and ESD techniques for complex GI disorders. Award-winning researcher with 19 international publications and 25+ congress presentations. | Turkey | from
$100 | |
| 24 years of experience | Advanced liver disease cases | Specializes in complex liver conditions with expertise in esophageal varices treatment and liver biopsies. Performs advanced endoscopic procedures like chromoendoscopy. | Turkey | from
$110 | |
| 24 years of experience | Advanced endoscopic procedures | Skilled in ERCP and gastric Botox – combines academic knowledge with extensive clinical practice. Published on cutting-edge treatments. | Turkey | from
$70 |