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Kivanc Derya Peker
22
years of experience

Kivanc Derya Peker

  • Specialization: Surgical oncologist
  • 22 years of experience
  • Speaks:
    English, Turkish
  • Online consultations: available
  • Workplace: Turkey, Istanbul, Hisar Hospital Intercontinental
  • Co-founder of the Hepatopancreatobiliary Surgery unit

    Dr. Kivanc Derya Peker is a gastrointestinal surgeon at Hisar Hospital Intercontinental in Istanbul. He co-founded the Hepatopancreatobiliary Surgery unit at Bakırköy Dr. Sadi Konuk Hospital. Dr. Peker completed specialized training at the Mayo Clinic in the United States. He treats complex cancers of the liver, pancreas, and stomach.

    • Performed over 400 pancreatic and gastric cancer surgeries to date.
    • Completed over 200 liver surgeries and numerous kidney transplants.
    • Ranked in the top 3 during his national gastroenterology surgery minor examination.
    • Practices at JCI-accredited Hisar Hospital, which serves 500,000 patients annually.

Online consultation with Kivanc Derya Peker

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4.5
Good
20 patient verified reviews
1 star
10%
2 stars
0%
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4 stars
5%
5 stars
85%

Patient reviews

About clinic Hisar Hospital Intercontinental
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1-5 of 20 reviews
Anonymous • PET-CT with Gallium 68(PSMA)
Turkey
Aug 19, 2026
Verified review.
The staff were a definite highlight, providing excellent support and guidance throughout the PET-CT with Gallium 68 PSMA scan
I came away with a positive overall impression of the day. The staff were a definite highlight, providing excellent support and guidance throughout the PET-CT with Gallium 68 PSMA scan. They made me feel looked after. The doctor was professional and the clinic itself was well-equipped. My only negative, and the reason for a lower overall score, was the airport transfer. The taxi was difficult for me to get in and out of. More importantly, upon arrival at the airport, I could not find the driver at the designated meeting point, which created unnecessary stress. While the medical care was handled very well, the logistics of the transport could be improved.
A positive overall impression of the day
My only negative was the airport transfers Difficult to get in and out of taxi. On arrival ay airport could not find diver at meeting point
Anonymous • Prostatectomy
Ukraine
Aug 19, 2026
Verified review.
The organization was top-notch
The consultation with the doctor and his calm confidence greatly helped to manage my anxiety. I went through the examination calmly and confidently, feeling a professional and compassionate approach at every stage. The organization was top-notch. The coordinator was always in touch, promptly resolving any issues that arose, and the transfer was always on time, which was very important. The clinic is excellent, and the staff is caring. The doctor himself is polite and attentive. Thank you.
The coordinator was always in touch👍 Great clinic👍 The doctor was polite and attentive👍 Transfer was always on time👍
Anonymous • Gastric sleeve surgery (Sleeve gastrectomy)
Brazil
Aug 16, 2026
Verified review.
I feel better than expected
My biggest fear was the language barrier in another country, but everyone made me feel comfortable and heard. From the coordinators to my doctor, the treatment was professional and humane. My surgeon was particularly good, visiting me after the surgery and explaining realistic outcomes beforehand. I feel better than expected. I was given a clear aftercare guide, and there were no surprise costs. My advice is to stay for about five days after the procedure before you plan to travel home.
My experience was very positive; it exceeded my expectations, since being in another country with a different language than the patient's is often frightening, but there I felt comfortable because at every moment I felt listened to and treated with a lot of human warmth — from the coordinators, the translator, and especially the doctor, who was very professional and humane in his treatment. A very beautiful experience.
Rim • Basic check-up
United Kingdom
Aug 29, 2026
Verified review.
The service was great and the staff was incredibly friendly, making me feel welcome right away
The service was great and the staff was incredibly friendly, making me feel welcome right away. The main point of difficulty for my basic check-up was the internal logistics. The process involves a lot of walking around and checking the availability of each department as you go, which can be quite time-consuming. It really would have been better if a specific time had been allocated for each service in advance to streamline the day.
Great service, friendly staff,
It involves a lot of walking around and checking the availability of each department. It would have been better if a specific time had been allocated for each service.
Anonymous • Robotic myomectomy
Switzerland
Jul 13, 2026
Verified review.
The surgeon and the entire team at the clinic were great, which put me at ease
My biggest worry was centered on one of the 2-3 fibroids I had. The surgeon and the entire team at the clinic were great, which put me at ease. The procedure itself was smooth. I am now in the early recovery phase and I feel good, though I do tire easily, as is expected. It’s still too early to know what the final results will be, but I am optimistic. I can’t really comment on the price clarity as I wasn't sure about the details. From a medical and care standpoint, everything was handled very professionally by the staff.
The doctor was patient and heard all my needs. He couldnot have done more. Bookmed helped me get the best options. The process was so smooth
Maybe, letting customer know there will be additional cost other than the ones quotated. We paid for so many tests not covered.
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Qualifications

Prof. Dr. Kivanc Derya Peker is a gastrointestinal surgeon at Hisar Hospital Intercontinental in Istanbul. He is a co-founder of the Hepatopancreatobiliary Surgery unit at Bakırköy Dr. Sadi Konuk Training and Research Hospital. Dr. Peker has performed over 400 pancreatic and gastric cancer surgeries and more than 200 liver procedures.

Clinical Specialization and Surgical Expertise

Dr. Peker treats the digestive system and associated organs. He provides care for patients with pancreatic neuroendocrine tumors, liver cancer, and gastric malignancies. His surgical practice includes the Whipple procedure, liver resections, and hyperthermic intraperitoneal chemotherapy (HIPEC). This technique delivers heated chemotherapy directly into the abdomen during surgery. The specialist also performs obesity-metabolic surgeries and endoscopic treatments.

Conditions Treated

  • Pancreatic, liver, and stomach cancers
  • Gallbladder and biliary tract diseases
  • Colon and rectal malignancies
  • Obesity and metabolic disorders
  • Liver hemangiomas and pancreatic cysts

Professional Achievements and Volumes

Dr. Peker established two medical units in Turkey during his career. He founded the Gastroenterology Surgery Clinic at Başakşehir Çam and Sakura City Hospital. His surgical record includes around 1,000 major operations. These encompass kidney transplants, colectomies, and biliary tract reconstructions. He ranked in the top 3 during his minor specialization examination.

Work Experience

  • Gastrointestinal Surgeon – Hisar Hospital Intercontinental, Istanbul
  • Founder of Gastroenterology Surgery Clinic – Başakşehir Çam and Sakura City Hospital
  • Co-founder of Hepatopancreatobiliary Surgery Unit – Bakırköy Dr. Sadi Konuk Training and Research Hospital
  • Training Physician – Turkish HPB Association certified training unit

Education and International Training

  • Medical Degree – Istanbul University, Istanbul Faculty of Medicine (Çapa)
  • General Surgery Specialization – Istanbul University, Istanbul Faculty of Medicine
  • Gastroenterology Surgery Specialization – Kartal Koşuyolu Yüksek İhtisas Hospital
  • Visiting Surgeon – Mayo Clinic (USA), Hepatopancreatobiliary and Obesity–Metabolic Clinics
  • PhD in Medical Biology – Istanbul University, focusing on stem cells and aging

Research and Scientific Focus

Dr. Peker researches cancer biology and cellular properties of obesity. He completed a doctoral thesis focused on the biology of aging. His academic interests include the development of stem cell treatments for metabolic diseases. Additionally, he provided training to surgical residents in hepatopancreatobiliary techniques for several years.

Professional Memberships

  • Turkish Surgery Association
  • Turkish HPB Association
  • Turkish Medical Association (TMA)

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