One Anastomosis Gastric Bypass Turkey Dr. Abdullah Şişik

(6 patient reviews)

Luna Dorothy
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Laparoscopic One-Anastomosis Gastric Bypass (OAGB) is a bariatric procedure that combines the principles of restriction and malabsorption, which are achieved by creating a long and narrow gastric pouch and bypassing part of the small bowel. It is also known as the mini gastric bypass (MGB) or omega loop gastric bypass. It is significantly increasing worldwide in terms of popularity because of it’s excellent results. It has excellent short and long term weight loss.

About Doctor Abdullah Şişik

Dr. Abdullah Şişik, born in 1983, graduated from Ege University Faculty of Medicine in 2007. He worked at Sağlık Bilimleri University Ümraniye Training and Research Hospital from 2007 to 2012 to specialize in general surgery. He then served at Bingöl State Hospital in 2013-2014 and returned to Ümraniye Training and Research Hospital in 2014. During this period, he specialized in obesity surgery and cholesterol surgery. While working at the same hospital, he became one of the first doctors to perform obesity surgery operations and provided services to thousands of patients.

Dr. Abdullah Şişik is also a well-known academic on the international stage. He has written numerous scientific articles, made presentations at international congresses, and served as one of the founding editors of the scientific journal “Archieves of Clinical and Experimental Medicine.”

Valuing his education and personal development greatly, Dr. Şişik has participated in various national and international courses and trainings. He holds both national and international certifications and is an expert in obesity surgery, metabolic surgery, and endoscopic procedures.

Dr. Abdullah Şişik is recognized as a meticulous surgeon who continually strives for self-improvement and places great importance on patient care. He currently provides services to patients in his own clinic.

Treatment details

  • Eligibility: +35 BMI
  • Processing time: 1 hour
  • Surgical procedure: Yes
  • Stitch: Dissolvable
  • Anesthesia type: General
  • Incision: 5
  • Hospital Accreditation: ISO
  • Recovery time: 7 days
  • Develop a treatment plan with our doctor
  • Private treatment coordinator (English, German, Arabic)
  • Private transfer between airport and clinic
  • Free advance reservation interviews

Important Information

  • Be sure to get approval from your medical travel advisor for your medical approval before making a reservation.
  • Personalized treatment plans and out-of-package available services are not included in the price of the fix package created.
  • This package includes a 24-hour free cancellation guarantee.
  • Must be 18 years of age or older.
  • Each user can only use 1 promo code.


  • VIP Transfers (SAW Airport-hotel, hotel-hospital, etc.)
  • 3 days Hampton by Hilton Hotel Accommodation
  • 4 days Hospital Accommodation
  • Preoperative Examinations
  • Examination of Anesthesia Physician
  • Examination of chest Diseases Physician
  • Examination of Cardiology Physician
  • Latest Technology Operating Room Supplies (Medtronic)
  • General Anesthesia
  • 1 Year Post-Operation Physician control (via WhatsApp)
  • 1 Year Dietician Support after Operation (via WhatsApp)
  • Lifelong Patient Care after Operation (via WhatsApp)
  • Drugs to be used after surgery
  • Supplements to be used after surgery
  • Patient Concierge
  • Pharmacist Aftercare Assistant
  • 24/7 Dietitian Support
  • Helpline with Dr HE Clinic and Surgery Team
  • Varicose Vein Stockings
  • Breathing Exercise Device


  • Flight Ticket
  • Istanbul Tour Package
  • Teeth Whitening

Disposable materials

Staple: Triple
Staple Brand: USA Covidien Brand

Treatment Plans

1st Day: Arrival and hospitalization process : After being picked up by a VIP vehicle, you will visit our hospital and sign the documents required for the surgery.
2nd Day Operation Day : Your surgery will be led by Associate Professor Abdullah Şişik and by 4 staff members including 1 assistant doctor and 2 nurses.
3rd Day After Operation Hospital Period: You will be kept under surveillance, your controls will be made and physical activity will be done.
4th Day After Operation Hospital Period : You will be kept under surveillance, your controls will be made and physical activity will be done.
5th Day Hotel Rest : You will be taken to the hotel by VIP vehicle and rest.
6th Day Hotel Rest : If you feel good, you can take advantage of Istanbul tour and beauty cosmetic packages.
7th Day: The final examination for the flight

Benefits of Gastric Bypass Surgery

  • It is applied laparoscopically, thus, this way accelerates the wound healing of the patient.
  • Food absorption is reduced by disabling the first 150-200 cm of the small intestine.
  • Hormonal changes (hunger hormone-ghrelin) level decreases.
  • Most people lose 10 to 15 pounds in the first month after surgery.
  • 75% of excess weight is lost within 1 year after the operation.
  • Since the stomach is reduced after gastric bypass, patients start to feel full more quickly despite eating less.
  • The risk of joint disorders, sleep apnea, high blood pressure, high cholesterol and heart diseases that may occur due to overweight, especially diabetes, is reduced.


  • ECG (Electrocardiogram)
  • Blood sample
  • X-ray
  • Ultrasound
  • BMI Calculator
  • Consultation with our Internal Medicine, Anesthesia and
  • Psychiatry doctors
  • Endoscopy
  • Respiratory Funciton Test


  • Medication Support
  • Supplements (Protein Shakes and Vitamins)
  • Varicose Vein Stocking
  • Breathing Exercise Device
  • 1 Year Post-Operation Physician Control
  • 2 Year Dietician (4 Dietician) Support after Operation
  • Personal Aftercare Assistant Support
  • Operation Support WhatsApp group with Dr Abdullah and hospital team


  • Nearport Hotel

Before - After

6 reviews for One Anastomosis Gastric Bypass Turkey Dr. Abdullah Şişik

Based on 6 reviews
5 star
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1 star
  1. Grainne

    From the driver picking us up at the airport, to the nurses upon arrival, the surgeon, fabulous Neots the nutritionist, the nurses that looked after me etc made it a first class experience. I cannot recommend the whole process enough.Thank you for a first class experience.

  2. Samantha

    Luna was amazing start to finish any questions she answered really quickly… I also had questions about the surgery which she could tell I was very worried but she set up a consultation with Dr.Abdullah and they called me from Whatsapp video. Me feel at ease instantly explained everything… I’m currently 4 days post op first day in hotel I can honestly say I feel great I’m walking good etc any time I needed help I pressed the buzzer and nurses came straight away if I told them I need pain meds instantly came back.. And was pain free withing a couple of mins… You see lots of company’s on tik tok social media and they offer extra but I chose this as the only focus on one thing and you and your health is there main priority from inquiring to even post op so amazing! You won’t regret it believe me xx so glad I went through this team big thanks to Luna and Dr Abdullah…

    Image #1 from Samantha
  3. Shimi

    Luna and Dr Abdullah was great! Letsmedi team really take care of you 24/7 before during and after surgery. It’s less then one week and I already lost 4 kgs with my surgery!

  4. Mr j Thompson

    I had my surgery with Letsmedi with Dr Abdullah Sisik recently. It is arranged almost 2 months ago by medical rep Luna Dorothy has been amazing every question or request I have had she has answered me so so quickly. She is very attentive to give all details i need and everything from pick ups to the procedure itself to even PCR tests for coming to hotel, she has arranged for me . AMAZING SERVICE I came here on my own and was very anxious but luna has done an amazing job. Dr abdullah and his team at ersoy hospital are unbelievable. They take care me as if I was their family and that’s the honest truthIf anyone is thinking of getting surgery in Turkey Letsmedi and Dr Abdullah is the place to go

  5. Andrew P Rose

    Letsmedi service is excellent, from home to hospital, hotel.. I can’t fault them thanks everyone.

    Image #1 from Andrew P Rose
  6. Maria

    Hello.My name is Maria.I have done a gastric bypass surgery and gold bladder removed at Letsmedi performed by Dr Abdullah on the 12.21.22. I was very impressed by the staff and the doctors services.I highly recommend the clinic to anyone. Big thank you for everyone who take care of me ❤️?

    Image #1 from Maria
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Q & A

How do I know which bypass type is right for me? Adrianna asked on 17/07/2022

When we see your medical form, we will advice you the true type of bypass.

Dr. Abdullah Şişik answered on 17/07/2022 store manager
(1) (0)
Which medications should I use after bypass? Mckenzie asked on 19/03/2022

Stomach protector (3 months), blood thinners (10 days), painkiller (first a few days if needed), antibiotic (3 days), Vitamin supplements (3 months mandatory, more will be recommended based on your periodic blood tests)

Dr. Abdullah Şişik answered on 19/03/2022 store manager
(1) (0)
How do you stay in contact with me after returning to my country? Can I always reach the Nyla asked on 25/09/2021

You will have whatsapp group together with doctors, nutritionists and coordinators. Every patient can write everything from the group and will take answers mostly in same day.

Dr. Abdullah Şişik answered on 25/09/2021 store manager
(1) (0)

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