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Gorkem Turkkan
17
years of experience

Gorkem Turkkan , Radiation oncologist

  • 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
10%
4 stars
10%
5 stars
70%

Patient reviews

About clinic Hisar Hospital Intercontinental
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1-5 of 20 reviews
Anonymous • Basic check-up
United States of America
Oct 26, 2026
Verified review.
The physicians and staff were exceptional
If you're considering a medical check-up abroad, here’s my honest take. I traveled from the U.S. to Istanbul for a comprehensive medical examination at Hisar Hospital, arranged through Bookimed. The physicians and staff were exceptional. I found them professional and genuinely caring. On the other hand, the overall efficiency could be improved, particularly with appointment scheduling and the wait times between departments; better coordination would make the experience smoother. Despite the delays, the quality of care and affordability made it worthwhile, and I received valuable insight into my health at a fraction of the U.S. cost.
I recently traveled from the U.S. to Istanbul for a comprehensive medical examination at Hisar Hospital, arranged through Bookimed. The physicians and medical staff were exceptional—professional, thorough, attentive, and genuinely caring. Although there were some scheduling delays and opportunities to improve efficiency, the quality of care and affordability made the experience worthwhile. I received valuable insight into my health at a fraction of what similar care would cost in the U.S. I'm grateful to Bookimed for helping coordinate my visit and to Hisar Hospital for the excellent medical care. I would absolutely recommend both to anyone considering medical tourism!
The overall efficiency could be improved, particularly with appointment scheduling, wait times between departments, and communication throughout the process. Better coordination would make the experience smoother and less time-consuming for patients.
Anonymous • Breast cancer surgery
Bulgaria
Oct 29, 2026
Verified review.
Ilona • Basic check-up
Germany
Oct 26, 2026
Verified review.
Anonymous • PET-CT with Gallium 68(PSMA)
Turkey
Oct 3, 2026
Verified review.
I can confirm that this part of my medical journey was managed with thorough competence
My primary concern before traveling for a PET-CT with Gallium 68 was the logistical side of things and whether every step would be clearly explained and executed in a new medical system. These worries proved to be entirely unfounded. The entire process was managed with clear and direct communication from the staff and the surgeon, which made a significant difference. The clinic's organization was evident. Everything was handled systematically, and each stage of the diagnostic procedure was laid out for me beforehand, so there were no surprises. The approach was very professional. but I can confirm that this part of my medical journey was managed with thorough competence.
Anonymous • Liposuction
Germany
Oct 10, 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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