Assoc. Prof. Dr. Onur Bayraktar

Assoc. Prof. Dr. Onur Bayraktar is a seasoned General and Colorectal Surgeon with a strong focus on minimally invasive, laparoscopic, and robotic-assisted gastrointestinal and colorectal surgery. He brings a wealth of academic and clinical experience, with dozens of peer‑reviewed publications investigating outcomes, procedural safety, novel extraction techniques (like specimen extraction in minimally invasive colorectal resections), and comparative studies in endoscopy, oncology, and hernia‑repair.

He is well-versed in complex colorectal oncology, benign colorectal diseases, biliopancreatic interventions (e.g. ERCP in altered GI anatomy), hernia repairs, and advanced GI tract surgeries.

In addition to clinical work, he actively contributes to research and academic literature — reinforcing his expertise and aligning with international standards of colorectal and gastrointestinal surgery.

• MD (General Surgery) — practicing as Specialist/Consultant in General & Colorectal / Minimally Invasive Surgery
• Extensive experience in laparoscopic, robotic and minimally invasive abdominal / colorectal / gastrointestinal surgery.

• Colon cancer and other colorectal cancers
• Rectal cancer and anal region disorders (fistulas, strictures, haemorrhoids, and complex anal pathologies)
• Benign colorectal and pelvic floor diseases (diverticular disease, rectocele, obstructive defecation syndromes, and pelvic floor disorders)
• Biliopancreatic diseases requiring ERCP and biliary interventions, including cases with altered gastrointestinal anatomy
• Hernias and abdominal wall disorders requiring surgical repair

• Appendectomy
• Gallbladder Removal (Cholecystectomy) Surgery
• Gastric Bypass Surgery
• Gastric Sleeve Surgery
• Hemorrhoids Surgery
• Hernia Repair Surgery
• Minimally Invasive Colorectal Resection (including laparoscopic and robotic colorectal cancer surgeries)
• Transvaginal Specimen Extraction following minimally invasive colorectal resections as part of advanced natural orifice surgical approaches
• Endoscopic Procedures, including ERCP in complex or altered GI-anatomy cases
• Anal and Pelvic Floor Surgeries for anal fistulas, anal strictures, rectocele, and pelvic floor disorders
• Flap Reconstructions, including V-Y Advancement Flap Procedures, where indicated

• TCD: Active Registered Member, Turkish Surgical Association (Türk Cerrahi Derneği).
• TKRCD: Member, Turkish Society of Colon and Rectal Surgery (Türk Kolon ve Rektum Cerrahisi Derneği).
• ELSA: Member, Endoscopic and Laparoscopic Surgeons of Asia.
• TTB: Registered Practitioner, Istanbul Medical Chamber / Turkish Medical Association.

• Natural Orifice Innovation Landmark
• International ResearchGate Scientific Distinction (Top 3% Tier)