Dr. Tugrul Demirel Bariatric Surgery Doctor in Istanbul | Mespoir

Tugrul Demirel

Dr. Tugrul Demirel

Istanbul, Turkey

  • Dr. Tugrul Demiril is a Bariatric surgeon in Istanbul and is currently working in Medical Park Hospital, Istanbul as a bariatric and metabolic dedicated surgeon and also has a private practice in Istanbul.
  • He is the only surgeon in Turkey that has accumulated experience on RYGB to Duodenal Switch and MGB to Duodenal Switch Conversion surgeries and which all are performed laparoscopically.
  • His one area of interest is Type 2 Diabetes Surgery and has performed Duodeno Ileal Interposition with Diverted Sleeve Gastrectomy for over 6 years along with 200+ Interposition surgeries.
  • He is the only surgeon in Turkey who performs successful laparoscopic De Meester Switch Surgery for DGR and has successfully completed 150+ such surgeries.
  • Due to his credibility and experience, he is one of the most sought out doctors all over the world.


  • Bariatric surgery
  • Minimally invasive surgeries
  • Cholecystectomy
  • Gastric Sleeve
  • Gastric Banding 
  • Gastrectomy
  • Advanced laparoscopy
  • Obesity Surgery
  • Diabetic Surgery
  • Revision Surgery
  • Duodenoileal Interposition for non- super obese patients
  • Duodenal Switch for super obese patients
  • Laparoscopic De Meester Switch Surgery for Duodenogastric Alkaline/Biliary Reflux Disease (DGR)


  • Specialized degree - General Surgery, Faculty of Medicine of Trakya University, Department of General Surgery
  • MD, Istanbul University, Istanbul School of Medicine


  • Dr. Tugrul Demirel has published several articles and papers in magazines and newsletter. Some of the articles and papers are as follows:
    • Single-port transumbilical laparoscopic cholecystectomy: A prospective randomized comparison of clinical outcomes of 140 patients
    • Transumbilical laparoscopic appendectomy, a preliminary multicenter comparative study in 87 patients with acute appendicitis
    • A new era in minimally invasive liver resection (MILR) Laparoscopic single-incision hepatic resection (SIL-LR): the first two cases.
    • SILS Incisional hernia repair: Is it possible in a huge hernia? A report of three cases.
    • POP SILS Floppy Nissen Fundoplication with Hiatal Repair: A case report.
  • He has also received many awards and certificates for his excellent medical services.


  • Member, Turkish Surgical Association
  • Associate Professor, ISTINYE University
  • Former General Surgeon, Memorial TBV service Hospital, 2012
  • Former General Surgeon, Universal Group General Hospital, 2012
  • General Surgeon, Beylikduzu Medical Center, 2013
  • Owner and General Surgeon, Diasurg Clinic, 2017
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