Prof. Dr. Halil Alis

Prof. Dr. Halil Alış is an internationally recognized general surgeon based in Istanbul, with deep expertise in minimally invasive and advanced surgical techniques. His core specialties include:

• Obesity & metabolic (bariatric) surgery (e.g. sleeve gastrectomy, gastric bypass)
• Laparoscopic surgery and robotic-assisted surgery (using e.g. Da Vinci system)
• Oncological and gastrointestinal surgery (colon, stomach, biliary tract, pancreas, etc.) with both open and minimally invasive approaches.
• Endoscopic procedures (diagnostic & therapeutic) — gastroscopy, colonoscopy, ERCP, endoscopic ultrasound — for comprehensive GI management.

He has published numerous peer‑reviewed research articles (in SCI/SCI‑E and local journals), authored book chapters, and regularly presents at national and international surgical congresses.

His academic and clinical background make him a strong choice for patients seeking bariatric/metabolic surgery, complex gastrointestinal or oncological surgeries, or minimally invasive surgery with international standards.

• M.D., Faculty of Medicine, Karadeniz Technical University — graduated 1992.
• Specialization in General Surgery, Istanbul University, Istanbul Faculty of Medicine — 2001.
• Associate Professor of General Surgery — 2010.
• Professor of General Surgery — 2016.

• Morbid obesity and obesity-related metabolic disorders (Type 2 Diabetes, Hypertension, Metabolic Syndrome)
• Gallstones, gallbladder disease, cholecystitis, and biliary tract disorders
• Hernias (e.g., inguinal hernia) and abdominal wall defects
• Colon and bowel diseases (polyps, diverticulitis, colon cancer, inflammatory bowel disease)
• Pancreatic diseases (chronic pancreatitis, pancreatic head cancer, pancreatic trauma)
• Upper and lower gastrointestinal cancers
• Appendicitis, including complicated acute appendicitis

• Appendectomy
• Gallbladder Removal (Cholecystectomy) Surgery
• Gastric Bypass Surgery
• Gastric Sleeve Surgery
• Hemorrhoids Surgery
• Hernia Repair Surgery
• Gastrointestinal Cancer Surgeries, including Hemicolectomy for Colon Cancer and Resections for Stomach, Pancreatic Head, and Biliary Tract Tumors
• Robotic-Assisted Minimally Invasive Surgeries (GI, Bariatric, and Oncologic)
• Diagnostic and Therapeutic Endoscopic Procedures, including Gastroscopy, Colonoscopy, ERCP, and Endoscopic Ultrasound (EUS) for Comprehensive Pre- and Post-Surgical Care

• SAGES: International Active Member, Society of American Gastrointestinal and Endoscopic Surgeons.
• EAES: International Active Member, European Association for Endoscopic Surgery.
• IFSO: Active Member, International Federation for the Surgery of Obesity and Metabolic Disorders.
• IASGO & ISSO: International Active Member, International Association of Surgeons, Gastroenterologists and Oncologists & International School of Surgical Oncology.

• Pioneering Long-Term Bariatric Cohort Study
• Prolific Scientific Literature Contributor