Yontem Yaman
- 4.6 Excellent • 472 reviews
- 76 years of experience
- Turkey, Istanbul, Medipol Mega University Hospital
Pediatric Hematology and Oncology
Pediatric Hematology and Oncology
2015 - 2015
Medipol Üniversitesi Parkinson Hastalığı ve Hareket Bozuklukları Merkezi
2009 - 2009
Medicalpark Bahçelievler Hastanesi
1999 - 2004
Medicalpark Bahçelievler Hastanesi
1997 - 2009
Amerikan Hastanesi
1997 - 1997
VKV Amerikan Hastanesi
1995 - 1995
Division of Neurosurgery, Toronto Western Hospital Research Fellow
1995 - 1995
Department of Neurosurgery, The Johns Hopkins Hospital
1995 - 1997
Toronto Western Hospital,
1994 - 1994
Division of Neurosurgery, Toronto Western Hospital
1992 - 1992
Department of Neurosurgery, University of Virginia
1992 - 1992
Department of Neurosurgery, University of Washington
1992 - 1992
İsrail Kudüs, The European Association of Neurosurgical Societies European
1991 - 1991
İspanya Zaragoz- The European Association of Neurosurgical Societies European
1990 - 1990
Glasgow, Scotland, İngiltere
1990 - 1990
Glasgow ve Edinburg, The British Council
1990 - 1990
Glasgow ve Edinburg, The British Council1994
Marmara University Institute of Health Sciences, Neurophysiology
1993
Marmara University Faculty of Medicine, Neurosurgery and Neurosurgery
1989
Marmara University Faculty of Medicine, Neurosurgery and Neurosurgery
1983
Hacettepe University, Faculty of Medicine
1983
Hacettepe University, Faculty of Medicine
Dr. Ali Osman Mucuoglu is a neurosurgeon. He completed his neurosurgery residency at Dokuz Eylül University from 2013 to 2019 after graduating from Eskişehir Osmangazi University in 2012 (2005–2012). He worked at Dokuz Eylül University and Muş State Hospital from 2019 to 2021. He has practiced at Atlas University Hospital since 2021.
He has five publications. These include a case report in the International Journal of Surgery Case Reports that has been cited seven times. He also reported on 3D printer‑assisted transsphenoidal hypophysectomy and on emergency minimally invasive intracerebral hemorrhage (ICH) surgery. He delivered an oral presentation at the 33rd Turkish Neurosurgical Society Congress in 2019.
He is a member of the Turkish Neurosurgical Society, the European Association of Neurosurgical Societies, and the Istanbul Chamber of Medicine. His advanced training includes spinal surgery courses in 2016 and 2017, the European Training Course on Head Injury and Functional Neurosurgery in 2017, and Surgical Neuroanatomy in 2017. He also holds an animal experimentation certificate from 2016.
Dr. Halil Can is a Professor of Neurosurgery (2025; Associate Professor 2020). He completed neurosurgical training at Istanbul University–Istanbul Faculty of Medicine in 2007. His clinical focus includes endoscopic and microsurgical spine surgery for fractures, tumors, and degenerative disease; advanced pain procedures; endoscopic skull base and pituitary surgery; and neurovascular, neuro-oncologic, and peripheral nerve surgery.
He has 21 international peer-reviewed papers (SCI/SSCI). Topics include cadaveric morphometry of Kambin’s triangle and the transforaminal triangular working zone, lumbar arterial and anterior approach anatomy, and an in vitro test of a new lumbar fixation device.
His clinical studies include a single-team series of 81 posterior circulation aneurysms, with 13 flow-diversion cases. He also reported five spinal cavernous malformation cases. He conducted Phase I safety and feasibility stem-cell trials in pediatric hypoxic-ischemic encephalopathy and in chronic complete spinal cord injury.
Dr. Irfan Cicin is a Professor of Medical Oncology at the Trakya University Faculty of Medicine (2015–present). He has over 20 years of medical oncology experience and has held academic roles since 2010.
Education: MD, Istanbul University – Cerrahpaşa (1991–1997). Residency in Internal Medicine, Trakya University (1997–2002). Fellowship in Medical Oncology, Trakya University (2002–2004).
Practice: Medical Oncologist, Trakya University (2005–2008). Medical Oncologist, Elazığ Training and Research Hospital (2008–2010). Associate Professor of Medical Oncology, Trakya University (2010–2015). He previously served as a physician in the Turkish Air Force at Etimesgut Military Hospital (2004–2005).
Dr. Muhammed Mustafa Atci is an Associate Professor of Medical Oncology at İstinye University, Liv Hospital Topkapı (2025–present). He previously served as Associate Professor and Education Coordinator at Prof. Dr. Cemil Taşcıoğlu City Hospital (2023–2025). He was also a Medical Oncologist there (2018–2021).
He has been a member of ASCO and the Turkish Society of Medical Oncology since 2018. He is the author or co-author of 19 peer-reviewed international papers on colon, breast, gastric, pancreatic, lung, thyroid, sarcoma, and colorectal cancers.
Notable works include a multicentre study on stage IIB colon cancer survival (Journal of Chemotherapy). He also studied the De Ritis ratio for lung metastasis in testicular cancer (Current Urology). His prognostic studies used PET/CT, MSI, lymph node ratio, and metabolic tumor volume.
Academic Details
Faculty / University
19 Mayis University, Faculty of Medicine, Samsun – Turkey
Date of Graduation
1992
Postgraduate Training
Institution: Department of Radiology, Faculty of Medicine, Erciyes University, Kayseri – Turkey
Supervisor in Charge of Training: Mustafa Ozturk
Training Period: From 1993 to 1998
Title of Thesis: Evaluation of Lower Extremity Artery-Occlusive Disease by MR Angiography
Accreditation
Radiology Specialist: 1998, The Ministry of Health of Turkey
Associate Professor: 2003, Interuniversity Committee
Academic Experience
Residency: Department of Radiology, Erciyes University, Kayseri – Turkey (1993 to 1998)
Private Practice: Maternal and Children Hospital, Sivas – Turkey (1998–2000)
Academic Positions:
2000 to 2003: Assistant Professor of Radiology, Firat University, Elazig – Turkey
2003 to 2009: Associate Professor of Radiology, Firat University, Elazig – Turkey
2009 to 2010: Professor of Radiology, Firat University, Elazig – Turkey
2010 to 2015: Professor of Radiology, Chairman, Bezmialem Vakif University, Istanbul – Turkey
2015 to 2016: Professor of Radiology, Chairman, Yeditepe University, Istanbul – Turkey
2017 to Present: Professor of Radiology, Interventional Radiology Unit, Bahçelievler Medical Park Hospital, Altınbaş University, Istanbul – Turkey
Fellowship
Institution: Department of Radiology, University Hospital of Cleveland, Case Western Reserve University, Cleveland, Ohio, USA
Duration: 2004 to 2005
Position: Research Fellow – Ultrasound & CT (Body)
Professional Memberships
-Turkish Society of Radiology
-Medical Ultrasound Society of Turkey
-Turkish Society of Radiology, Abdominal Radiology Study Group
-ESGAR – European Society of Gastrointestinal and Abdominal Radiology (Fellow)
-ESUR – European Society of Urogenital Radiology (Fellow)
-ESR – European Society of Radiology
-Turkish Society of Magnetic Resonance
-Turkish Society of Radiology, Urogenital Radiology Study Group
-Turkish Society of Interventional Radiology
-Korean Society of Radiology (International Member)
-Radiological Society of North America (RSNA) – Corresponding Member
Prizes and Awards
European Congress of Radiology (ECR) 2002, Vienna – Image Interpretation, 3rd Prize
Interpretation Corner of European Radiology 2003 – 2nd Prize
Cases of the Day – ESGAR 2007, Lisbon, Portugal – 2nd Prize
Cases of the Day – ESGAR 2009, Valencia, Spain – 1st Prize
Dr. Mustafa Gurelik is a neurosurgeon who graduated from Cumhuriyet University Faculty of Medicine in 1989. He completed his specialization in 1997. He has worked at Cumhuriyet University, Sivas Anadolu Hospital, and Malatya Gözde Hospital.
Dr. Gurelik treats brain and spinal cord tumors, brain hemorrhages, spine diseases, and traumatic injuries to the head and spine. He is skilled in pituitary surgery, shunt and endoscopic procedures for hydrocephalus, and treatments for lumbar and neck hernias. He also manages cerebrovascular aneurysms and nerve compression syndromes such as carpal tunnel. Dr. Gurelik is known for his high success rates and dedication to advanced neurosurgical care.
Dr. Abdulkerim Gokoglu is a Neurosurgery Specialist with a PhD in Clinical Anatomy. He is known for his skills in treating brain tumors, spinal diseases, head trauma, congenital nervous system disorders, and spine deformities.
Dr. Gokoglu has broad experience managing stroke, paralysis, aneurysms, hemorrhage, tumors, hernias, and traumatic injuries. He has worked on advanced neurosurgical procedures. He also serves as a postdoctoral research assistant at Brigham and Women’s Hospital, showing his strong focus on both patient care and research.
Dr. Metin Demirkaya is a specialist in Pediatric Oncology. He earned his medical degree from Istanbul University Cerrahpaşa School of Medicine between 1993 and 1999. He completed his Pediatrics residency and Pediatric Oncology residency at Bursa Uludag University from 1999 to 2010.
Dr. Demirkaya has worked at leading centers such as GATA Pediatric Hematology-Oncology-Bone Marrow Transplantation Centre and Istanbul Kanuni Sultan Süleyman Education and Research Hospital. He became an Assistant Professor in 2013. In 2019, he was appointed Professor of Medicine in Pediatric Oncology at Medicana Bursa Hospital.
Dr. Demirkaya is known for his clinical skills and leadership in pediatric cancer care and bone marrow transplantation. He has made important contributions to research and has received recognition in his field.
Dr. Kayihan Engin is a Radiation Oncologist. He earned his medical degree from Uludağ University Medical College in 1983. He completed his residency in Radiation Oncology at the Center of Oncology & Nuclear Medicine in Istanbul in 1990. From 1990 to 1994, he pursued a post-doctoral fellowship in Thermoradiotherapy at Thomas Jefferson University in the USA.
Dr. Engin has held key academic and leadership roles. He served as Professor, Chairman, and Faculty Accreditation Coordinator at Uludağ University Medical College from 1991 to 2005. He was also Professor and Director at Anadolu Medical Center between 2004 and 2017. Since 2017, he has led the Oncological Sciences departments at Ceylan International and Medicana Bursa Hospitals. Dr. Engin is known for his work in improving cancer treatment and medical education standards in Turkey.
Dr. Hilmi Apak is a respected pediatric hematology-oncology specialist with more than 21 years of experience. He is trained in pediatric oncology. Dr. Apak has led advanced treatments, including bone marrow transplantation, leukemia chemotherapy, and CAR T-cell therapy.
He has published 75 international medical articles, showing his strong contribution to pediatric oncology research. Dr. Apak has worked as assistant editor for the Turkish Pediatrics Archives Periodical. He has also held important academic and leadership positions, such as Head of Pediatric Hematology-Oncology at Istanbul University-Cerrahpaşa.
Education and Expertise
GATA Military Medical Faculty
GATA Haydarpaşa Training Hospital Neurosurgery Clinic (Specialization)
Beykent University Hospital and Health Institutions Management (Master's)
Experience
GATA Military Medical Faculty Trainee Doctor (6 months)
Samsun Sahara Medical School Comm. (3 months)
Naval Command War Squadron TCG Diligence Medical Officer (2 years)
Dz.K.K. Submarine Battery Factory Infirmary Doctor (3 months)
Naval Forces Command Infirmary Doctor (3 months)
GATA Haydarpaşa Training Hospital Chief Assistant (12 years)
Kasımpaşa Marine Hospital Neurosurgery Clinic Chief (5 years)
Bahçelievler Medical Park Hospital Neurosurgery Specialist (11 years)
Altınbaş University Faculty of Medicine Neurosurgery Lecturer. Member (4 years)
Altınbaş University Faculty of Medicine Head of Neurosurgery Department. (3 years)
Basic and Advanced Cardiac life support courses (BASIC)
Basic and Advanced Cardiac life support courses (ADVANCED)
GATA Military Medical Faculty. Microsurgery Training Course
Istanbul Vatan Hospital Hand surgery microsurgery course
Neuroanatomy course
Spine Surgery course
Professional Memberships
Turkish Neurosurgery Association
Spine Society of Europe
Turkish Spinal and Peripheral Nerve Surgery Group
Prof. Dr. Gülşah Bademci is a physician specialized in the field of brain, nerve, spine, and spinal cord surgery. She graduated as the fourth-ranked student from Ankara University Faculty of Medicine in 1993. She obtained her title as a brain and nerve surgeon from the Ankara University Faculty of Medicine Department of Brain and Nerve Surgery in 2001. In 2008, she became an associate professor at the Kırıkkale University Faculty of Medicine, and in 2021, she became a professor at the Yüksek İhtisas University Faculty of Medicine. She has contributed to numerous international publications, serving as a research and clinical fellow at the University of Arkansas Medical Sciences with Prof. Dr. M. Gazi Yaşargil, and as a research fellow at Yale University School of Medicine. She holds ECFMG America Board Step 1 and EANS European Board certificates. She speaks advanced-level English and has awards in tennis and swimming. She also pursues professional-level caricature art and medical illustration. In her 30-year career, she has performed numerous surgeries as a brain and nerve surgery specialist, particularly in spinal canal stenosis surgery, lumbar and cervical disc herniations, brain tumors, hydrocephalus surgery, and nerve compressions.
Sema Yılmaz was born on July 30, 1965. She received her undergraduate degree from Istanbul University Cerrahpaşa Medical Faculty and completed her medical residency training at the Department of Pediatrics at Zeynep Kamil Women's and Children's Health and Diseases Hospital. She also completed her medical subspecialty training in Pediatric Hematology/Oncology at Cukurova University. Her medical residency thesis was titled "The Relationship Between Morning First Urine Density and Nocturnal Enuresis in Children Aged 3-6 Years", and her medical subspecialty thesis was titled "Comparison of Sphingosine 1-phosphate Receptor 4 Gene Expression in Healthy Children and Neuroblastoma Patients". She started her medical career as a general practitioner. After working as a general practitioner for 4 years, she worked as a doctor researcher at Zeynep Kamil Women's and Children's Health and Diseases Training and Research Hospital for 5 years. She then served as a specialist doctor, assistant professor, and associate professor at various institutions. She worked at Houston MD Anderson, North Carolina-UNC, Boston-Harvard University in the USA. Additionally, she conducted research on cell therapies. She received the title of professor in Pediatric Hematology/Oncology at Usak Medical Faculty. She is a member of the Turkish Pediatric Oncology Group, European Association for Cancer Research (EACR), Turkish Medical Association, Turkish National Pediatrics Association, Turkish Pediatrics Association, Pediatrics Specialty Academy Association (PUADER), Turkish Immunology Association, Turkish Hematology Association, and Molecular Oncology Association (MOKAD). She currently serves her patients at Koru Hospital. Her medical interests include:
Cell therapies in childhood cancers
Cancer immunology
Investigation of genetic pathways responsible for cancer and metastasis
Pulmonary microbiota
BAL transplantation
Trustworthy, attentive, successful neurosurgeon with over 34 years of experience, high rate of success and exceptional surgical skills, providing quality neurological service for patients, successfully treating over thousands of patients suffering from many severe, complex conditions of the brain, spine and the nerves.
Experienced in performing treatment modalities like micro neurosurgery, endoscopic skull base surgery, endoscopic third ventriculostomy, minimally invasive spine surgery and percutaneous spine surgery. Keen on performing clinical research and attending national and international medical conferences to stay abreast of new technologies in the field. Compassionate and detail-oriented with excellent communication skills. Expertise in healthcare, education and program management. Adept at developing and implementing forward-thinking strategies to enhance patient outcomes and collective knowledge in the field. Desiring to bring skills and success. Focused on working closely with other medical professionals and following up with patients. Well-versed at emergency procedures and fast and accurate sanitation.
Work History
2020-01 – Current - Asst. Prof. Neurosurgeon
Istanbul Medipol University, Health Care Practice and Research Center Pendik Hospital
• He successfully treated and followed patients with cerebral hemorrhage, brain and spinal cord tumors, and patients with hydrocephalus.
• He performed transnasal pituitary surgeries with success.
• Also, many cervical lumbar and thoracic disc patients were successfully treated, and disc prosthesis were applied to some of them.
• He re-operated a degenerative spine patient who had been operated on before at another center and the patient regained his health.
• He also successfully treated patients with premature neonatal intracerebral hemorrhage.
2019-08 – 2020-01 - Neurosurgeon
Freelancer, Istanbul, Turkey
• Operated on patients' brains, spines and peripheral nerves to correct deformities, repair injuries, prevent and treat diseases and improve patients' motor functions. Performed successful operations for complex, advanced and complicated disease of the brain and spine some of which were operated unsuccessfully at other medical centers by different neurosurgeons.
• Offered advanced knowledge, leadership abilities and technical assistance with complex surgical cases.
• Maintained admitting privileges at local hospitals and provided quality follow-up care.
• Educated patients on recovery methods and times.
• Designed treatment plans for patients.
• Thoroughly assessed patients to identify medical condition and level of surgical risk.
• Founded a spinal surgery group with orthopedic surgeons and treated very advanced and severe vertebra deformities, spine abnormalities, scoliosis.
2018-12 - 2019-08 - Neurosurgeon
Alkafeel Super Speciality Hospital, Karbala, Iraq
• Conducted up to 5 operations per month to correct deformities in neurological and spinal systems, repair traumas, and treat diseases of different areas. Performed successful operations (success rate 100 percent : 90-95) for severe, complex and advanced diseases of the brain, spine and nerves in adults and children. (Cerebral intrinsic and extrinsic tumor surgery, posterior fossa surgery, spontaneous and traumatic intracranial hematomas, Interhemispheric 3th ventricle and lateral ventricle surgery, pontocerebellar angle tumor surgery, spinal instrumentation and fusion surgery, microdiscectomy cervical, thoracic, lumbar, pediatric cranial and spine anomaly surgery). Followed the patients postoperatively.
• Educated patients on recovery methods and times.
• Thoroughly assessed patients to identify medical condition and level of surgical risk.
• Performed emergency surgeries.
• Examined 900 patients in total in the outpatient clinic and gave medical treatments to them when necessary.
2015-10 - 2018-11 - Neurosurgeon
Medistate Kavacık Hospital, Istanbul, Turkey
• Operated on patients' brains, spines and peripheral nerves to correct deformities, repair injuries, prevent and treat different advanced, complex severe diseases and improve patients' motor functions.
• Conducted up to operations per month to correct deformities in neurological and spinal systems, repair traumas, restore partial or full functionality and prevent and treat diseases of different areas.
• Performed successful operations (success rate percent : 95) for severe, complex and advanced diseases of the brain , spine and nerves in adults and children.(Brain tumor, arachnoid cyst, intracerebral hematoma, spinal stenosis, hydrocephalus, myelomeningocele).Followed the patients postoperatively.
• Educated patients on recovery methods and times Thoroughly assessed patients to identify medical condition and level of surgical risk.
• Performed emergency surgeries (intracerebral hematoma, intracerebral abscess).
• Examined 850 patients in total in the outpatient clinic and gave medical treatment to them when necessary.
1994-03 - 2015-09 - Neurosurgeon
Ankara Training and Research Hospital, Ankara, Turkey
• Supervised trainees, medical students, residents and fellows to help each achieve proficiency in field.
• Conducted up to 20 operations per month to correct deformities in neurological and spinal systems, repair traumas, restore partial or full functionality and prevent and treat diseases of different areas. Performed successful operations (success rate: %90) for severe, complex and advanced diseases of the brain, spine and nerves in adults and children. (Skull base surgery, extended trans base approach, orbit zygomatic approach, presigmoid approach, orbital approaches, transcranial and lateral orbitotomy, Endoscopic transsphenoidal pituitary surgery, CSF leakage surgery, endoscopic, microscopic and transsphenoidal, transcranial. Endoscopic third ventriculostomy and surgery of multiloculated hydrocephalus and pediatric neurosurgery. Cerebral intrinsic and extrinsic tumor surgery, posterior fossa surgery. Brain aneurysm, AVM and cavernoma surgery.
• Spontaneous and traumatic intracranial hematomas. Hemifacial spasm and trigeminal neuralgia surgery (microsurgical decompression) Interhemispheric 3th ventricle and lateral ventricle surgery. Pineal area surgery. Pontocerebellar angle tumor surgery.
• Foreman magnum tumors surgery. Surgery of hydrocephaly, Syringomyelia and craniovertebral animalia).Followed the patients postoperatively.
• Educated patients on recovery methods and times Thoroughly assessed patients to identify medical condition and level of surgical risk.
• Performed emergency surgeries (Epidural, subdural and intracerebral hematoma, vertebra fracture).
• Examined 500-700 patients per day in the outpatient clinic and gave medical treatment to them when necessary. Examined patients in the emergency service.
• Designed treatment plans for patients.
• Offered advanced knowledge, leadership abilities and technical assistance with complex surgical cases.
• Led and oversaw 15 medical personnel in operating room setting to perform surgeries.
• Led and oversaw medical personnel in operating room setting to perform surgeries.
Education
1982-09 - 1988-08
M.D.: Medicine And (Pre-Medicine)
Ankara University Medical School - Ankara
General Medicine Training for 6 years. Graduated with a high GPA.
1988-11 - 1994-05
Specialist Neurosurgery: Neuroscience
University of Health Sciences - Ankara
6 years of neurosurgery training.
• My thesis was on brain abscess and their clinical and laboratory evaluations
1995-05 - 1995-07
Neuroscience
The Institute of Neurological Sciences and Psychiatry.
Ankara
I attended the course for microsurgery at University of Hacettepe Institute of Neurological Sciences and Psychiatry.
1998-04 - 2019-05
Observer Doctor: Neuroscience
Department of Neurosurgery, MSU - Ann Arbour,
Michigan USA
2012-05 - 2012-05
Neuro endoscopy: Neuroscience
Ghent University - Ghent, Belgium
International endoscopic neurosurgery workshop,
Ghent, Belgium
I attended the workshop for endoscopic skull base operations the and Neuro endoscopic third ventriculostomy at University of Ghent Hospital
Skills
Micro neurosurgery - Excellent
Neuro endoscopy - Excellent
Cranial base endoscopy - Excellent
Minimal invasive surgery - Excellent
Percutaneous spinal surgery - Excellent
Neuronavigation – Excellent
Certifications
1995-04 Microsurgery
2012-05 Endoscopy
Languages
Turkish - Native
English - Advanced
Arabic - Novice
Affiliations
Turkish Neurosurgical Society
Turkish Medical Association
Accomplishments
• Trained team of staff nurses in medical office procedures to ensure consistent quality of care.
• Published 17 articles in national and international reviews and presented papers in medical congresses.
Interests and operations I perform
Vascular diseases of brain
Endoscopic hypophysis surgery
Tumors of brain, spine and medulla spinalis surgery
Endoscopic brain ventricle surgery
Endoscopic third ventriculostomy
Traumas of brain and spine
Cervical, thoracic and lumbar disc hernias and narrow
canal disease surgery
Spine instrumentation and fusion surgery
Baclofen pump and neurostimulators insertions
Hydrocephalus surgery
Congenital diseases of the brain and spine (pediatric
neurosurgery)
Peripheral nerve surgery
Prof. Dr. Ilhan Elmaci is a leading neurosurgeon. He is known for his skill in brain and spinal surgeries, neurooncology, and skull base surgery. He has worked at top institutions such as Johns Hopkins University. Dr. Elmaci has introduced new techniques in microsurgery and endoscopic skull base surgery.
He is the founding chairman of the Skull Base Society in Turkey. He is also an active member of the European Skull Base Society. Dr. Elmaci has helped advance neurosurgery through teamwork across specialties. He led Turkey’s first EANS-accredited neurosurgery clinic. He also holds accreditations from the European Association of Neurosurgical Societies.
Dr. Elmaci has published over 110 scientific papers and given more than 250 presentations at congresses. His work continues to influence neurosurgical practice and patient care around the world.