Dr
Barış Demiriz
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Medical Unit: Bariatric Surgery Center
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Turkey, Istanbul
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18+ Years Experience
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Dr. Barış Demiriz is a bariatric and metabolic surgeon at Liv Hospital Vadistanbul in Istanbul. A graduate of Istanbul University Istanbul Faculty of Medicine, he trained at Bakırköy Dr. Sadi Konuk Training and Research Hospital and in bariatric surgery at the University of Michigan and the University of Bristol. His work covers modified sleeve gastrectomy, Roux-en-Y gastric bypass, transit bipartition, revision bariatric surgery, endoscopic sleeve gastrectomy and gastric balloon treatment.
Professional Profile
+About
Dr. Barış Demiriz is a bariatric and metabolic surgeon at Liv Hospital Vadistanbul in Istanbul. A graduate of Istanbul University Istanbul Faculty of Medicine, he trained at Bakırköy Dr. Sadi Konuk Training and Research Hospital and in bariatric surgery at the University of Michigan and the University of Bristol. His work covers modified sleeve gastrectomy, Roux-en-Y gastric bypass, transit bipartition, revision bariatric surgery, endoscopic sleeve gastrectomy and gastric balloon treatment.
+Education
- Istanbul University Istanbul Faculty of Medicine
- Istanbul Bakırköy Dr. Sadi Konuk Training and Research Hospital
+Experience
- Liv Hospital (since 2025)
- Ataköy Medicana Hospital - General Surgery and Mesenchymal Stem Cell Center, Medical Director (2024-2025)
- Private Practice (2017-2024)
- Istanbul Esenyurt University, Faculty of Health Sciences - General Surgery, Assistant Professor (2017-2021)
- Beylikdüzü Kolan Hospital - Obesity and Metabolic Surgery Unit (2016-2017)
- Gaziantep Primer Hospital (2015-2016)
- University of Bristol - Bariatric Surgery
- Ankara Numune Training and Research Hospital - General Surgery (2010-2014)
- University of Michigan - Bariatric Surgery Clinic (2008-2009)
+Memberships
- International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO)
- Association of Bariatric and Metabolic Surgery
- Turkish Surgical Association
- Turkish Obesity Surgery Society
- National Endoscopic Laparoscopic Surgery Association
- Endocrine Surgery Association
- National Trauma and Emergency Surgery Association
+Research
- Bariatric Surgery Masterclass (2012)
- The Surgical and Perioperative Management of a Bariatric Patient (2014)
- The International Society of Stem Cell Application (2024)
- Stanford School of Medicine, Stanford Center of Health Education - Stem Cell Therapeutics (2025)
+International Papers
Doğan M, Demiriz B. The effectiveness of laparoscopic sleeve gastrectomy surgical applied to morbidly obese adolescents: Bariatric surgery in adolescents. The Injector, 2023; 2(3): 178-182. Kılınç E, Demiriz B, Işıkay N, Yıldırım AE, Can S, Basmacı C. Alfentanil versus ketamine c...
- Doğan M, Demiriz B. The effectiveness of laparoscopic sleeve gastrectomy surgical applied to morbidly obese adolescents: Bariatric surgery in adolescents. The Injector, 2023; 2(3): 178-182.
- Kılınç E, Demiriz B, Işıkay N, Yıldırım AE, Can S, Basmacı C. Alfentanil versus ketamine combined with propofol for sedation during upper gastrointestinal system endoscopy in morbidly obese patients. Saudi Med J 2016; 37(11): 179-183.
- Gomceli I, Demiriz B, Tez M. Gastric carcinogenesis. World J Gastroenterol 2012; 18(37): 5161-5170.
- Saylam B, Coşkun F, Demiriz B, Vural V, Comçalı B, Tez M. A new and simple score for predicting cystobiliary fistula in patients with hepatic hydatid cysts. Surgery. 2013.
- Yıldırım AE, Altun R, Demiriz B. Bariatrik Cerrahi Uygulanmış Hastalarda Endoskopi ve Endoskopik Tedavi Yöntemleri. Güncel Gastroenteroloji, 2014; 18/4: 415-422.
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