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Gorkem Turkkan
17
years of experience

Gorkem Turkkan

  • Specialization: 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
5%
4 stars
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5 stars
80%

Patient reviews

About clinic Hisar Hospital Intercontinental
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1-5 of 20 reviews
Anonymous • Holmium Laser Enucleation of the Prostate
Sep 26, 2026
Verified review.
The care I received on-site was excellent
The most important thing for future patients to know is to be prepared for new realities. I came ready for a laser enucleation operation for my medium-sized prostate, but I ended up undergoing a steam ablation procedure instead after my consultation. My surgeon was very good. He clearly explained the urination improvement timeline, which was quite reassuring as I begin my recovery. Although there has been little contact from the clinic since I left, the care I received on-site was excellent. My main advice is to go in with an open mind, as your final treatment plan might be different from what you initially expected.
Anonymous • Gastric sleeve surgery (Sleeve gastrectomy)
South Africa
Sep 6, 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
Зарина • Chronic pain
Kyrgyzstan
Sep 15, 2026
Verified review.
Evgeniya • PET/CT
Ukraine
Sep 9, 2026
Verified review.
Anonymous • Diabetes type 2
France
Sep 7, 2026
Verified review.
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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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