About
Prof. Dr. Abdullah Şişik – Weight Loss & Bariatric Surgery Specialist
Prof. Dr. Abdullah Şişik is a Professor and leading surgeon specializing in obesity and colorectal surgery in Istanbul. With over 18 years of experience, he has performed more than 7000 successful obesity surgery operations. He has international training collaborations in Belgium, Norway, and Austria, and holds prestigious certificates including FEBS-MIS and FACS.
Prof. Dr. Abdullah Şişik - Weight Loss & Bariatric Surgery Specialist
Prof. Dr. Abdullah Şişik is one of Turkey's foremost surgeons in obesity and colorectal surgery with over 18 years of experience. He graduated from Ege University Faculty of Medicine in 2007 and completed his general surgery specialization at Health Sciences University Ümraniye Training and Research Hospital.
Professional Journey
Dr. Şişik served as General Surgery Specialist at Bingöl State Hospital from 2012 to 2014 and returned to Ümraniye Training and Research Hospital until 2021. He performed the first obesity surgery at the institution in 2015 and has trained assistant physicians in obesity surgery.
Specialized Services
- Obesity Surgery including sleeve gastrectomy and gastric bypass
- Colorectal Surgery
- Advanced Laparoscopic Surgery
- Robotic Surgery
- Diabetes Surgery
- Stomach Intragastric Balloon Applications
Key Achievements
- Performed over 7000 successful obesity surgery operations
- International collaborations with experts in Belgium, Norway, and Austria
- Achieved Professor title in 2025
- Published over 90 scientific articles
- Editor-in-chief of Archives of Clinical and Experimental Medicine
- Received European Board Certificate in minimal invasive surgery (FEBS-MIS)
- Fellow of American College of Surgeons (FACS)
- IFSO Surgeon of Excellence certificate
Educational Background
- Medical Doctor (MD) - Ege University Faculty of Medicine, 2007
- General Surgery Specialist - Health Sciences University Ümraniye Training and Research Hospital, 2007-2012
- Associate Professor - 2019
- Professor - 2025
Professional Achievements
- One of Turkey's leading surgeons in obesity surgery and colorectal surgery
- Completed medical education at Ege University Faculty of Medicine (2007)
- Completed general surgery specialization at Health Sciences University Ümraniye Training and Research Hospital (2007-2012)
- Served as General Surgery Specialist at Bingöl State Hospital (2012-2014)
- Returned to Ümraniye Training and Research Hospital (2014-2021)
- Performed the first obesity surgery at the institution (2015), pioneering in the field
- Performed over 1000 obesity surgery operations during his tenure
- Led training of assistant physicians in obesity surgery
- Specialized in advanced laparoscopic surgery
- International collaborations: Belgium with Prof. Dr. Bruno Dillemans (2018-2019), Norway with Prof. Dr. Jon Kristinsson (2022), Austria with Prof. Dr. Gerard Prager (2024)
- Achieved Associate Professor title (2019) and Professor title (2025)
- Advised on three specialization theses
- Published over 90 scientific articles in national and international journals
- Presented nearly 150 papers at conferences
- Founding editor of Archives of Clinical and Experimental Medicine journal (2016)
- Editor-in-chief of the journal since 2020
- Served as scientific secretariat at International Obesity Surgery Congress (2024)
- First surgeon in Turkey to receive European Board Certificate in minimal invasive surgery (FEBS-MIS) (2024)
- Received Fellow of American College of Surgeons (FACS) title (2025)
- Received IFSO Surgeon of Excellence certificate (2025)
- Has been accepting patients at his private practice since 2021
- Performed over 7000 successful obesity surgery operations
- Trusted by thousands of patients from Turkey and abroad
- Adjustable Gastric Banding
- Diabetes Surgery
- Endoscopic Weight Loss Procedures
- Gastric Bypass
- Gastric Sleeve Surgery
- Metabolic Surgery
- Post-Surgery Nutritional Counseling
- 🇹🇷 Turkish
- 🇬🇧 English
- 🇩🇪 German
- Obesity Surgery
- Colorectal Surgery
- Laparoscopic Surgery
FAQ
Frequently Asked Questions
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