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Dr. Hanifi Onalan

Dr. Hanifi Onalan

General Surgeon specialist

Is a well-established Istanbul-based General Surgeon with 25+ years in the field.

25 Years

General info

Dr. Hanifi Önalan, specializing in general surgery, conducts excellent bariatric surgeries and multiple other surgical procedures, his long experience led him to be one of the best general surgeons in Turkey.

General Physician
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Education of Dr. Hanifi Onalan

  • He completed his graduation from the Istanbul University Istanbul Faculty of Medicine in 1998 and did his Master’s Degree at the Taksim Training and Research Hospital General Surgery Clinic in 2004.

  • Dr. Hanafi an honored member of the Turkish Surgical Association, as well as member of National Trauma and Emergency Surgery Association, and Turkish Medical Association.


  • General Surgeon Consultant at TOSYO State Hospital
  • General Surgeon Consultant at TAKSIM Training and Research Hospital


Paper Published

  • Can Postoperative Adhesions Be Prevented? Effect of COX-2 Selective Inhibitor Rofecoxib on Intraabdominal Adhesion Model Experimental Study 19 (4): 145-149, 2005 Journal of Contemporary Surgery 2005 Osman YÜCEL, Yücel YANKOL, Ferda NİHAT KÖKSOY, Hanifi ÖNALAN, Pelin AKBABA, Ayşenur AKYILDIZ İĞDEM Taksim Education and Research Hospital 2. General Surgery Clinic * and Pathology Labarotuarı **, Istanbul
  • Tractotomy and omentoplasty in hepatic firearm injury case 3. Regional Trauma and Emergency Surgery Congress (with international participation) 2001 A.Çelik, H. Önalan, N. Mecit, M .Er, O. Yücel
  • Parenteral nutrition, early results in patients undergoing resection surgery for Gis malignancies. O.Demiray, Dr. D. Volunteer, Dr.H. Önalan, Dr.S.Bilgiç, Dr.FNKöksoy, Dr.O.Yücel

list of treatments

Below is a list of treatments provided by the doctor

  • Gastrectomy
  • Gastric bypass
  • Gastric Botox
  • Gastric Balloon
  • Liposuction

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Frequently Asked Questions

Questions About Common questions of gastric bypass

Yes, but Gastric bypass surgery has some risks like any other surgical procedure.
No, Gastric bypass surgery is not reversible.
No, Gastric bypass surgery carries some risks like any other surgical procedure, like infection blood clots, and internal bleeding.
Due to the extreme decrease in food consumption, some patients may face malnutrition, poor wound healing, and infection.
Yes, It is one of the most effective ways to lose weight.