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
Education
Experience
Professional Memberships
TTB-Istanbul Medical Chamber
Turkish Surgery Association
Turkish Colon and Rectum Surgery Association
Turkish Hepato-Pancreato-Biliary Surgery Association
Procedures Performed
Associate Professor Dr. Ali Solmaz is a general and bariatric surgeon with over 20 years of experience. He specializes in general, metabolic, and obesity surgery. Dr. Solmaz completed his medical education and surgical training at Marmara University, a leading institution in Turkey. He earned his associate professorship at Bağcılar Training and Research Hospital.
Dr. Solmaz has performed thousands of surgeries at hospitals such as Çamlıca Erdem Hospital and Bağcılar Training and Research Hospital. He is known for his skills in advanced laparoscopic and minimally invasive surgery. These techniques help patients recover faster and achieve better results.
He is active in medical research and serves on the editorial boards of several journals. Dr. Solmaz is also a member of professional organizations, including IFSO, the Turkish Surgery Association, and the Bariatric & Metabolic Surgery Association.
Dr. Tülin Kendir Koçak is a board-certified gastroenterologist and internal medicine specialist. She has over 25 years of clinical experience. Dr. Koçak is skilled in advanced endoscopic procedures such as esophagogastroduodenoscopy, colonoscopy, chromoendoscopy, and flexible rectosigmoidoscopy. She has performed many specialized interventions, including esophageal variceal band ligation, achalasia balloon dilatation, polypectomy, foreign body removal, and percutaneous endoscopic gastrostomy (PEG).
Dr. Koçak graduated from Istanbul University Cerrahpasa Faculty of Medicine. She completed her advanced training at leading hospitals in Turkey. She has held important roles in both public and private healthcare institutions. Dr. Koçak’s extensive hands-on experience makes her a respected expert in gastroenterology.
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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Dr. Ayman is a Medical Doctor and Surgeon specializing in General and Bariatric Surgery, with extensive training and experience in minimally invasive surgery and obesity management.
Doctor earned his Master's Degree in Medicine and Surgery from the University of Brescia in 2005. He then completed his specialization in General Surgery at the same university in 2016, with a thesis titled "Fast track in minimally invasive colon surgery. He has complete autonomy in the clinical management of complex patients and extensive experience in performing a variety of surgical procedures, including major surgeries. His expertise includes gastric and colorectal surgery, bariatric surgery, abdominal wall surgery, videolaparoscopic (VLC) and laparotomic (VLA) procedures, and proctology. He is particularly skilled in performing medium and major surgeries in emergency settings.
Currently, he practices at Maria Cecilia Hospital in Bologna, where he evaluates the degree of obesity and associated conditions. Based on these assessments, he determines the most suitable surgical intervention, such as sleeve gastrectomy, gastric bypass, and mini laparoscopic bypass.
He has advanced training in colorectal and abdominal wall surgery from top institutions in Italy and Belgium.
He is an active member of the Italian Society of Obesity Surgery and Metabolic Disorders (S.I.C.OB.) and the International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO), contributing to the advancement of bariatric surgery on an international level.
Dr. Ayman is distinguished by his dedication to patient care and his advanced skills in minimally invasive and bariatric surgery.
Dr. Leonardo Favio Chavez Gasque is an experienced orthopedic specialist. He treats complex conditions such as Dupuytren's contracture, floating elbow, brachial plexus injuries, and humeral fractures. He is skilled in both surgical and non-surgical treatments. Dr. Chavez Gasque creates personalized care plans to achieve the best results for his patients.
He has strong knowledge of biomechanics, especially of the wrist, hand, pelvic limbs, menisci, shoulder, hip, and spine. His work is guided by a thorough understanding of musculoskeletal anatomy and injury patterns. He provides care based on the latest medical evidence for each patient.
With his in-depth medical knowledge and passion for preventing premature aging, he now serves as a Medical Tutor at the Lucia Magnani Health Clinic, a center of excellence offering comprehensive check-ups and programs for healthy and long-lasting living.
Education and Specializations:
Areas of Expertise:
Medical Director and Head of General Medicine and Ultrasound Services, with over 30 years of experience managing patients and supervising medical teams.
Speaker on national and local TV programs, sharing his medical expertise on gastroenterology and internal medicine.
At the Lucia Magnani Health Clinic, Dr. Nonni serves as a Medical Tutor, guiding patients through personalized prevention and health improvement programs. He collaborates with a multidisciplinary team to integrate traditional medical knowledge with innovative approaches in wellness and longevity.
Dr. Nonni firmly believes that prevention is the key to a healthy and long life. Through in-depth health assessments and tailored programs, he supports patients at the Lucia Magnani Health Clinic in achieving lasting wellness.
Dr. Abdurrahman Kadayifci is a leading gastroenterologist. He specializes in interventional endoscopy, fatty liver disease, pancreatic cysts, and pancreatic cancer. He founded the Gastroenterology Department and the Gastrointestinal Endoscopy Center at Gaziantep University Medical School. His work has improved medical care in the region.
Dr. Kadayifci has conducted research at top institutions such as the University of California and Harvard Medical School. His research focuses on liver transplantation and early diagnosis of pancreatic cancer. He has co-authored major textbooks and published many articles in respected journals. His work has made him a recognized expert in his field.
Dr. Homayoon is a Specialist Gastroenterologist with more than 11 years of experience in the fields of gastroenterology, hepatology, endoscopy, and colonoscopy, and more than 16 years of experience in the field of internal medicine. She has graduated from Shiraz University of Medical Sciences which is one of the best universities in Iran, and has one of the most equipped and advanced transplant centres in the world (Abu-Ali Sina Hospital). Dr. Homayoon has vast experience in treating patients with all types of gastrointestinal and hepatic disorders such as oesophageal motility disorders, all types of hepatitis, ulcerative colitis, Crohn’s disease, gastric and duodenal ulcers, constipation, H pylori infection, irritable bowel syndrome, fatty liver, cirrhosis, gastroesophageal reflux disorders, occult blood in stool, melena, fresh rectal bleeding, celiac disease, acute and chronic diarrhoea, food intolerance, flatulence, liver cysts, liver abscess, pancreatitis, and abdominal pain. She has expertise in upper gastrointestinal endoscopy, total colonoscopy, and liver elastography.
EXPERTISE:
Specializations
Diabetes (Sugar)
Thyroid
Hypertension
cholesterol
stomach diseases
intestinal diseases
osteoporosis
Experience
Azerbaijan Gusar Central Hospital
Vreden Russian Research Institute of Traumatology and Orthopedics
Azerbaijan Göranboy, First Lieutenant Doctor
Hospital Park Darıca Hospital
BAH
Education
Azerbaijan Medical Faculty (2015)
Kocaeli Derince Training and Research Hospital (2016-2020)
Vocational Trainings, Courses and Conferences Attended
Internal Medicine Congress
Gastro Academy
Gastroenterologist
Crohn's disease
Ulcerative colitis
Other autoimmune diseases
Gastritis
Ulcers of the stomach and duodenum
Precancerous conditions of the gastrointestinal tract
Irritable bowel syndrome
Chronic diarrhea
Chronic constipation, etc.
SPECIALIZATION:
Gastroenterologist
EDUCATION:
Azerbaijan State Medical University
COURSES:
Graduated from the Azerbaijan State Medical University. In different years, he participated in seminars held in Azerbaijan by German, Colombian, Swiss, Russian and Ukrainian specialists on "Basics of Homotoxicology", gastroenterology, isopathy, acupuncture and neurotherapy, and received the relevant certificates. At the Sisli Etfal Hospital Egitim Araştırma in Istanbul he attended the refresher courses on "Metabolic Disorders and Obesity", Ege University of Izmir on "Inflammatory Bowel Diseases" and at the same time he attended the Congress on Bioregulatory Drugs in Germany. He attended the courses held Individual Medical Association in Ankara, on the topic of "PRP-CGF and Serum Ozonation". Currently working as a gastroenterologist in the clinic of biological medicine. Has successful results in the treatment of a number of chronic diseases of the gastrointestinal tract.
EXPERIENCE:
21 years old
Member of SICOB - Italian Society of Obesity Surgery and ACOI - Association of Italian Hospital Surgeons
Dr Braun is a board-certified general surgeon with over 25 years of experience specializing in gastrointestinal surgery, particularly in the treatment of gastroesophageal reflux disease (GERD) through Fundoplication surgery. He has performed over 500 successful Nissen and Toupet Fundoplication procedures, with a focus on minimally invasive laparoscopic techniques. His expertise extends to diagnosing complex cases of GERD and offering comprehensive treatment plans to improve patient outcomes.
He has carried out his main training experiences in various international institutions and specialization courses in general and digestive system surgery, including a two-year training internship at Johns Hopkins University, Division of Hepatobiliary Pancreatic Surgery and numerous courses in Madrid, with Prof. E. Moreno Gonzales (Curso Internacional de Actualizaciòn en chirurgia General y del Aparato Digestivo) or in New Orleans (Medical Education at the 90th Annual Clinical Congress of the American College of Surgeons).
Dr. Braun has extensive expertise in the field of digestive surgery. He has focused on implementing advanced protocols and optimizing surgical techniques, while maintaining high standards of safety and patient care. He has collaborated with a multidisciplinary team to provide an integrated and personalized approach in the management of obese or digestive disorder patients, improving quality of life and reducing post-operative complications.
Prof. Deraco has dedicated his career to helping patients with complex cancers, particularly those affecting the peritoneum, a membrane in the abdomen. He began his medical career in 1989 at the Surgery and Experimental Oncology Departments of the Fondazione IRCCS, National Cancer Institute in Milan, Italy. Over the years, he has played a key role in advancing treatments for peritoneal surface malignancies (PSM). For more than a decade, he was the lead physician for the Peritoneal Surface Malignancies Program. Since 2017, he has served as the director of the Peritoneal Surface Malignancies Unit, where he continues to focus on providing cutting-edge care for his patients.
Prof. Deraco’s expertise is in specialized cancer treatments like Cytoreductive Surgery (CRS), Hyperthermic Intra-Peritoneal Chemotherapy (HIPEC), and Pressurized Intra-Peritoneal Aerosolized Chemotherapy (PIPAC). These techniques aim to remove cancer and deliver heated chemotherapy directly to the abdomen, giving patients with PSM new hope. He has successfully treated over 1,200 patients using these advanced methods.
In addition to his clinical work, Prof. Deraco is a professor at Milan University, where he teaches future surgeons about peritoneal surface malignancies. His teaching extends internationally, as he has mentored over 30 postdoctoral fellows from prestigious institutions worldwide.
Prof. Deraco’s educational background is extensive. He earned his medical degree from the University of Messina in 1987 with top honors, followed by a specialization in general surgery five years later. His training continued in Paris, where he specialized in oncology at the prestigious Paris Dauphine University. He further honed his skills through fellowships in world-renowned institutions such as the Gustave Roussy Institute in France, the Royal Marsden Hospital in the UK, and the Washington Cancer Institute in the USA.
Throughout his career, Prof. Deraco has remained actively involved in research and professional organizations. He has published over 250 scientific articles and 25 book chapters, contributing to the advancement of cancer treatment globally. He serves on the board of multiple scientific societies dedicated to cancer research, including the Peritoneal Surface Oncology International Group (PSOGI) and the Italian Society for Loco-Regional Cancer Therapy (SITILO).
Dr. Muhammed Zubeyr Üçüncü is an Associate Professor of Surgery and a specialist in General Surgery. He earned his medical degree from Istanbul University, Istanbul Medicine Faculty. He is known for his skills in acute biliary pancreatitis, endoscopy, trauma and emergency surgery, obesity, and breast health.
Dr. Üçüncü has published more than 15 peer-reviewed articles. His research covers breast cancer, gastrointestinal diseases, and surgical methods. He has presented his work at international congresses, including the SIS World Congress on Breast Healthcare and the European Congress of Trauma and Emergency Surgery.
He is certified in Advanced Trauma Life Support and Advanced Endoscopy. He is also a member of the International Federation for the Surgery of Obesity and Metabolic Disorders. Dr. Üçüncü has helped improve breast cancer prognosis and minimally invasive surgery in Turkey.