Prof. Koray Ozduman
9
reviews
02/02/2026
14/01/2026
24/01/2026
After that I turned to Dr. Koray Ozduman and underwent Gamma Knife treatment. It was a simple and painless treatment. I highly recommend it.
Many thanks to the doctor.
19/01/2026
Special thanks to the hospital admission planning team — Beyza, Şenay, Elif, Irmak, and also Tuğçe from the patient relations department.
During a time when support is especially needed, these people truly help cope with anxiety and stress. Many thanks to the entire team.
24/12/2025
Later I underwent Gamma Knife treatment with Koray Ozduman. The treatment was easy and painless. I am very grateful to the doctor and recommend him to everyone.
17/10/2025
26/05/2025
On January 9, 2023, my son underwent Gamma Knife surgery for an arteriovenous malformation.
Special thanks to Koray Hoca and his entire team.
I was surprised, because I know how busy they are. They showed attention even to a person trying to reach out by email — thank you.
Koray Ozduman is a Turkish neurosurgeon; Chair of the Department of Neurosurgery at Acıbadem University Faculty of Medicine and an operating physician at Acıbadem Altunizade Hospital in Istanbul. His clinical work focuses on brain tumors: meningiomas, gliomas, and metastases. He uses both open microsurgery and Gamma Knife radiosurgery — a method of precisely targeting a tumor with radiation without opening the skull. He was previously co-director of the Gamma Knife unit at Acıbadem, where the system has been in operation since 2005, with experience in treating more than 9,000 patients. He has substantial international training: he became the first Turkish resident in the Yale-Turkey Neurosurgical Traveling Fellowship program, and then completed a two-year research fellowship in neuro-oncology at the same Yale University. Prior to that, he undertook a clinical observership at Matsumoto University in Japan. He is actively engaged in academic work: open academic databases list more than one hundred publications and thousands of citations. He speaks Turkish, English, and German. For a patient diagnosed with a brain tumor, this is a clear choice: an operating surgeon with an academic background, a leadership role in a major private network, and hands-on experience in both microsurgery and radiosurgery.
Achievements and awards
About Doctor Koray Ozduman
Neurosurgery. Main areas — brain tumors (meningiomas, gliomas, metastases) and Gamma Knife radiosurgery.
- 1984–1992 — secondary education, Austrian High School (St. Georg Avusturya Lisesi), Istanbul.
- 1992–1998 — medical degree, Istanbul University Medical School.
- 1998–2005 — neurosurgery residency, Marmara University Faculty of Medicine.
- 1999–2000 — molecular biology fellowship, Boyer Institute for Molecular Medicine, Yale University.
- 2000–2002 — clinical observership, Matsumoto University, Japan.
- 2002–2003 — clinical fellowship, Yale University Department of Neurosurgery.
- 2005–2007 — research fellowship in neuro-oncology, Yale University.
- 2009 — Assistant Professor, Acıbadem University Faculty of Medicine.
- 2005 — obtained the license to practice neurosurgery.
- 2007–2008 — Head of the Neurosurgery Clinic at Gümüşsuyu Askeri Hastanesi, Istanbul (mandatory military service).
- 2020 — present — practice at Acıbadem Healthcare Group; operates at Acıbadem Altunizade Hospital.
- Previously — co-director of the Gamma Knife unit at Acıbadem.
- Currently — Chair of the Department of Neurosurgery at Acıbadem University Faculty of Medicine.
- Clinical focus: brain tumor surgery, Gamma Knife radiosurgery.
- According to AVESIS Acıbadem University — 148 publications.
- According to ResearchGate — 127 publications, more than 3,670 citations.
- Main areas: brain tumors (meningiomas, gliomas, metastases), molecular neuro-oncology, intraoperative MRI, Gamma Knife radiosurgery.
- Teaching activity — Acıbadem University Faculty of Medicine.
- Co-founder of the company NOT Neurooncology Technologies.
Acıbadem Altunizade Hospital, Istanbul, is one of the largest clinics of the Acıbadem network, an academic hospital under the auspices of Acıbadem University. For a patient with a brain tumor, high-end equipment is concentrated here: hybrid operating rooms with access to a 3 Tesla MRI, a CT scanner, and robotic angiography directly during surgery — this makes it possible to verify the result of tumor removal without bringing the patient out of anesthesia. The clinic operates in a multidisciplinary format: surgical oncology, medical oncology, and radiation oncology act as a single team. There is a separate Gamma Knife unit with the modern Gamma Knife Esprit system — for treating brain tumors and vascular abnormalities of the brain without open surgery. For international patients, the clinic supports a standard protocol: remote consultations, second opinions, remote review of MRI scans, and scheduling for radiosurgery.
