Dr. Nejat Akalan heads the Neurosurgery Department at Medipol Mega University Hospital in Istanbul. He specializes in epilepsy surgery and neuro-oncology for both children and adults. Dr. Akalan uses intraoperative MRI and the O-arm system to improve surgical accuracy. He has published over 110 scientific papers and co-authored a neurosurgery textbook.

• Performs brain tumor removals using minimally invasive techniques to speed recovery.
• Treats complex conditions like glioblastoma, glioma, and pituitary adenoma.
• Specializes in surgical treatment for epilepsy and movement disorders.
• Works at a JCI-accredited hospital serving over 1,200 patients daily.

Dr. Naci Karacaoglan is a plastic and reconstructive surgeon at Medipol Mega University Hospital. He holds the official plastic surgery expert title from the Ministry of Health of Turkey. Dr. Karacaoglan specializes in hair transplants, liposuction, and facial surgeries. He completed fellowships in the US and Turkey to refine his surgical techniques.

• Recognized as a top plastic surgeon by Harper's Bazaar and Elle magazines.
• Member of the American Society for Aesthetic Plastic Surgery.
• Performs FUE hair transplants, rhinoplasty, and complex mommy makeovers.
• Practices at JCI-accredited Medipol Mega University Hospital in Istanbul.

Dr. Zvi Ram is the current head of the European Association of Neurosurgical Societies (EANS). He is a neurosurgeon at Sourasky Medical Center in Israel. Dr. Ram specializes in treating brain tumors, aneurysms, and cerebrovascular pathologies. He is an expert in brain mapping and deep brain stimulation.

• Performs minimally invasive surgery for brain and spinal cord disorders.
• Treats complex conditions like Parkinson's disease, epilepsy, and glioblastoma.
• Winner of the Borenstein Award and the Goldhirsh Foundation Award.
• Expert in transnasal tumor resection and skull base surgery.

Dr. Tamer Atasever is a nuclear medicine specialist at Medipol Mega University Hospital. He previously served as the Director of the Nuclear Medicine Department at Ankara Order Laboratory. Dr. Atasever held multiple professorships at the prestigious Gazi University. He is a member of the European Association of Nuclear Medicine.

• Expert in radioiodine therapy and PET-CT with Gallium 68 for cancer diagnostics.
• Uses advanced nuclear imaging for Parkinson’s and Alzheimer’s disease.
• Practices at JCI-accredited Medipol Mega University Hospital in Istanbul.
• Member of the Turkey Association of Nuclear Medicine.

Dr. Rachel Grossman is a neurosurgeon at Sourasky Medical Center in Tel Aviv. She specializes in complex brain tumor surgeries and awake craniotomies with cortical mapping. Dr. Grossman completed a brain tumor fellowship at Johns Hopkins Hospital in the US. She has received international research awards for developing new treatments for malignant tumors.

• Expert in endoscopic pituitary and skull base tumor resection.
• Performs CyberKnife radiosurgery and transnasal resections.
• Treats brain aneurysms, cysts, and arteriovenous malformations.
• Member of the European Association of Neurosurgical Societies tumor section.

The doctor is a distinguished neurosurgeon with over 30 years of experience, specializing in skull base surgery, neuro-oncology, neurovascular surgery, spine, and spinal cord surgery.

Currently serving as a professor at NPISTANBUL Brain Hospital, the doctor has contributed to numerous international and national peer-reviewed journals and has presented scientific papers at various international conferences.

The doctor graduated from Istanbul University Istanbul Medical School and completed post-graduation in neurosurgery from the same institution.

Education:

Medical Faculty, Trakya University,  

Edirne, Turkey (1994-2000)

Professional Experience:

General Practitioner and Emergency Physician

Bartın (2000-2004)

Specialization:  

Department of Neurosurgery, S.B. Göztepe Training and Research Hospital,  

Istanbul (2004-2010)

Participation in the Accreditation Process by the European Association of Neurosurgical Societies (EANS) during  

Specialization (2004-2010)

Completion of Compulsory Service as Specialist Physician

Tokat State Hospital, Tokat (2010-2012)

Assistant Professor, Department of Neurosurgery

Gaziosmanpaşa University, Tokat (2012-2014)

Contribution to the Establishment of the Department of Neurosurgery at Medipol University  

(2012-2014)

Lecturer

Medipol University, Istanbul (2012-2014)

Specialist Physician

Memorial Istanbul Hospitals, Istanbul (2014-2018)

Lecturer, Faculty of Health Sciences

Eurasia University, Istanbul (2014-2021)

Associate Professor in the field of Neurosurgery (2021- )

Specialist Physician

Acıbadem Maslak Hospital, Istanbul (2018-2021)

Specialist Physician

Liv Hospital Ulus, Istanbul (2021-2023)

2023 –

Istanbul Florence Nightingale Hospital, Istanbul

Skills and Achievements:

Obtained Associate Professorship in the field of Neurosurgery (2021)

Experience in Academic Teaching and Management (2012-2021)

Proficiency in Turkish (Native) and English (Advanced)

Dr. Jonathan Roth is a neurosurgeon at Sourasky Medical Center in Tel Aviv. He specializes in endoscopic skull base and ventricular surgery. He completed specialized training at Cornell Medical Center and NYU Langone Health. Dr. Roth treats complex conditions like brain tumors, aneurysms, and pituitary adenomas.

• Performs transnasal tumor resection and trans-sphenoidal hypophysectomy.
• Expert in pediatric neurosurgery and hydrocephalus shunt procedures.
• Member of the International Federation of Neuroendoscopy.
• Works at Sourasky, ranked among the world’s top clinics by Newsweek.

Dr. Shlomi Constantini is a top neurosurgeon at Sourasky Medical Center in Israel. He treats brain and spine tumors in both adults and children. Dr. Constantini received the Mahaly Best Clinical Research Award from the AANS. He completed training in microsurgery and neuro-endoscopy across five European countries.

• Specializes in surgical correction of vascular brain aneurysms and congenital bone disorders.
• Performs transnasal resection, skull base tumor excision, and shunt surgeries.
• Member of the European Society of Pediatric Neurosurgery and the CNS.
• Treats 400,000+ annual patients at the Newsweek-ranked Sourasky Medical Center.

Dr. Shimon Rochkind is a neurosurgeon at Sourasky Medical Center specializing in pediatric and peripheral nerve microsurgery. He heads the Israeli Society of Laser Neurotechnologies. Dr. Rochkind treats adults and children for complex spinal and nerve disorders. He trained at prestigious centers in Canada, Germany, and South Africa. His practice focuses on spinal disc herniation and brachial plexus reconstruction.

• Uses laser and bioengineering technologies for minimally invasive spinal surgery.
• Performs neuroendoscopic procedures to reduce surgical risks in complex cases.
• Treats rare conditions like cauda equina syndrome and spina bifida.
• Expert in sonographic diagnosis for shoulder girdle and facial nerve disorders.

Dr. Ercan Kaya is a neurosurgery specialist. He earned his M.D. from Marmara University. He completed his residency at Kartal Dr. Lütfi Kırdar Training and Research Hospital in 2020. He fulfilled his mandatory service in Mardin. He then served as a neurosurgery specialist at Sancaktepe Training and Research Hospital. Since 2026, he has worked as a neurosurgeon at NPİSTANBUL Hospital.

His practice focuses on spine and spinal cord disorders. He gained further experience as an observer in the Complex Spinal Surgery department at The Walton Centre, a leading neurosurgery center in the UK.

Dr. Margalit Navo heads the Neurosurgery Department at Sourasky Medical Center in Israel. She specializes in surgery for brain and skull base tumors in children and adults. Dr. Navo completed surgical training for skull base diseases in the United States. She uses endoscopic techniques to remove tumors through the nasal cavity for faster recovery.

• Has performed 100+ surgeries for skull base tumors.
• Completed over 70 successful meningioma procedures.
• Works at Sourasky, ranked among the Top 10 most popular clinics globally by Newsweek.
• Member of the North American Skull Base Society.

The doctor is a highly respected Austrian neurosurgeon specializing in spinal surgery, neurotraumatology, and microsurgical treatment of the brain and spine. With decades of experience, the doctor is recognized for precision, innovation, and dedication to restoring neurological function and quality of life.

Graduating from the University of Vienna in the 1980s, the doctor completed a neurosurgery residency at Vienna General Hospital. The doctor advanced expertise in neurotrauma and complex spine reconstruction, integrating modern techniques such as microsurgical decompression and spinal fusion.

Currently a leading consultant at Wiener Privatklinik, the doctor focuses on spine surgery, nerve decompression, tumor removal, and minimally invasive neurosurgical interventions.

Dr. Itzhak Fried is a neurosurgeon at Sourasky Medical Center specializing in epilepsy and functional brain mapping. He graduated from Stanford University and completed his surgical training at Yale University. Dr. Fried holds a dual role as a scientist and professor at the UCLA David Geffen School of Medicine.

• Performs brain surgery for children and adults with epilepsy and vascular malformations.
• Uses Deep Brain Stimulation (DBS) and stereotactic radiosurgery for movement disorders.
• Developed innovative methods to recover speech and memory functions after seizures.
• Practices at Ichilov, a Newsweek-ranked hospital among the top 10 for medical tourism.

Prof. Dr. Salih Murat İmer is a neurosurgeon with over 30 years of experience. He founded and led the Neurosurgery Department at Okan University Hospital. He has written 68 scientific articles and contributed to 9 book chapters. Dr. İmer has also presented at 33 international congresses, showing his influence in neurosurgery worldwide.

Dr. İmer holds advanced certifications in functional and stereotactic neurosurgery, Leksell Gamma Knife radiosurgery, and endoscopic spine surgery. He received specialized training in several European countries. He has worked with leading experts such as Prof. Matti Vapalahti and Prof. Juha Hernesniemi. Through these collaborations, he has helped improve neurosurgical practice and education around the world.

Dr. Mehmet Osman Akcakaya is a neurosurgeon with 18 years of experience. He specializes in microneurosurgery and functional neurosurgery. He treats head trauma, brain tumors, Parkinson’s disease, and spinal disorders. Dr. Akcakaya uses advanced surgical techniques for these complex conditions.

He has received several awards, including the Second Prize for 'Best Oral Presentation' at the Congress of the Nervous System Surgery Society. He completed a 4-year training program with the European Association of Neurosurgical Societies (EANS). He also holds the EANS board certificate (Part I). Dr. Akcakaya has completed fellowships in Israel and Germany.

He is a member of the Turkish Association of Neurosurgery and EANS. He has also served on scientific committees for international courses on endoscopic spine surgery.

Education and Specialization

• Bachelor’s Degree: Çukurova University Faculty of Medicine (1987/1993)
• Medical Specialization: Department of Pediatrics, Fırat University (1993/2001)
• Subspecialty: Pediatric Neurology Unit, Hacettepe University (2002/2004)

Professional Experience

• General Practitioner: Mardin State Hospital, Emergency Department (1993/1996)
• Research Assistant: Faculty of Medicine, Fırat University (1996/2001)
• Lecturer: Faculty of Medicine, İnönü University (2001/2002)
• Subspecialty Research Assistant: Faculty of Medicine, Hacettepe University (2002/2004)
• Assistant Professor: Faculty of Medicine, İnönü University (2004/2008)
• Associate Professor: Faculty of Medicine, İnönü University (2008/2014)
• Professor: Faculty of Medicine, İnönü University (2014/2023)

Dr. Mehmet Tonge is a neurosurgeon with expertise in Stereotactic and Functional Neurosurgery. He specializes in MR Guided Focused Ultrasound, deep brain stimulation, Gamma Knife Radiosurgery, and surgery for movement disorders, pain, and spasticity.

Dr. Tonge has published 32 articles in international and national journals and written 12 book chapters. He has presented 92 oral and poster presentations and delivered 41 invited lectures. He completed a Deep Brain Stimulation Fellowship at Maastricht University and finished the 4-year EANS training cycle. Dr. Tonge is known for his research and clinical work in functional neurosurgery.