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Gorkem Turkkan
17
years of experience

Dr Gorkem — Istanbul

  • Specialisation: Radiation oncologist
  • 17 years of experience
  • Speaks:
    English, Turkish
  • Online consultations: available
  • Workplace: Turkey, Istanbul, Hisar Hospital Intercontinental
  • Over 2,500 radiotherapy sessions have been successfully completed using the advanced MR-Linac device.

    Dr. Gorkem Turkkan is a radiation oncologist at Hisar Hospital Intercontinental in Istanbul. He has successfully completed over 2,500 radiotherapy sessions using MR-Linac technology. Dr. Turkkan focuses on MRI-guided radiotherapy and stereotactic treatments for various cancers. He conducted clinical research on proton therapy at the MAASTRO Clinic in the Netherlands.

    • Specializes in prostate, breast, lung, and head and neck cancer treatments.
    • Uses VMAT and IMRT techniques to target tumors with precision.
    • Maintains membership in the European Society of Radiotherapy and Oncology.
    • Works at a JCI-accredited hospital serving 500,000+ patients annually.

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

Patient reviews

About clinic Hisar Hospital Intercontinental
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1-5 of 20 reviews
Anonymous • Gastric sleeve surgery (Sleeve gastrectomy)
South Africa
6 Sept 2026
Verified review.
My journey felt "perfect"
What stood out most was the surgeon's personal approach. He showed me exactly what would be removed and set very realistic expectations for weight loss, which built a lot of trust. He even visited me personally after my sleeve gastrectomy. My journey felt "perfect". The care was solid. The main challenge was communication, as the "language could improve" among some team members. From a practical standpoint, the final bill had no surprises or additional expenses. I stayed in the hospital for more than six nights, and the clinic has remained easy to reach since I left, which is a great support during this recovery phase.
perfect
language could improve
Anonymous • Diabetes type 2
France
7 Sept 2026
Verified review.
Anonymous • PET-CT with Gallium 68(PSMA)
Turkey
19 Aug 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
19 Aug 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
16 Aug 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.
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Qualifications

Assoc. Prof. Gorkem Turkkan is a radiation oncology specialist at Hisar Hospital Intercontinental in Istanbul. He has completed over 2,500 radiotherapy sessions using the MR-Linac device. Dr. Turkkan specializes in MRI-guided radiotherapy and stereotactic treatments for various cancers.

Specialization and Advanced Techniques

Dr. Turkkan focuses on precision radiation therapy for breast, lung, and prostate cancers. He performs stereotactic radiotherapy and MRI-guided treatments. These techniques allow for real-time imaging of tumors during the procedure. High-precision imaging improves accuracy and protects surrounding healthy tissues.

The specialist also uses Volumetric Arc Therapy (VMAT) and Intensity Modulated Radiotherapy (IMRT). These technologies help him treat head, neck, and brain cancers. His work includes treating lung toxicity related to thoracic radiotherapy and administering proton therapy. He treats various conditions including rectal, esophageal, and pancreatic cancers.

Work Experience

  • 2023–Present — Radiation Oncology Specialist — Hisar Hospital Intercontinental
  • 2021–2023 — Assoc. Prof. — Liv Hospital Ulus and Istinye University
  • 2020 — Clinical Researcher — MAASTRO Clinic, Maastricht University, Netherlands
  • 2019–2021 — Head of Department — Mugla Sitki Kocman University
  • 2016–2019 — Radiation Oncology Specialist — Compulsory state service

Education and Academic Training

Dr. Turkkan taught undergraduate courses at Mugla Sitki Kocman University and postgraduate courses for Ear Nose and Throat specialization. He also taught radiotherapy courses at Istinye University Vocational School of Health Services.

  • 2003 — Gulhane Military Medical Academy — Undergraduate medical studies
  • 2009 — Bulent Ecevit University — Medical degree completion
  • 2016 — Trakya University — Specialization in Radiation Oncology
  • 2023 — Received the title of Associate Professor

Research and Publications

Dr. Turkkan is active in medical research with 27 articles in domestic and international journals. He has contributed to 5 medical book chapters published by national and international houses. The specialist has presented 31 oral and poster presentations at professional congresses. He is currently conducting two research projects supported by the TUBITAK agency.

Professional Memberships

  • European Society of Radiotherapy and Oncology (ESTRO)
  • Turkish Society of Radiation Oncology (TROD)

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