Dr. Ibrahim Erdim is an ENT specialist. He studied at the Istanbul Faculty of Medicine from 2003 to 2009. He completed his ENT residency at Bakırköy Dr. Sadi Konuk Training and Research Hospital from 2010 to 2014. His specialty thesis examined polysomnographic findings in obese adolescents with and without metabolic syndrome.

Experience: He worked at Erbaa State Hospital from 2014 to 2017. He served in the Department of Otorhinolaryngology at Tokat Gaziosmanpaşa University Faculty of Medicine from 2017 to 2020. He worked at Sancaktepe Training and Research Hospital, Otorhinolaryngology, from 2020 to 2025. He has been an ENT specialist at Lokman Hekim Istanbul Hospital since 2016.

Interests: Otology and neurotology; head and neck cancer surgery; rhinoplasty and facial plastic surgery; pediatric ENT; medical facial aesthetic procedures.

Publications include Stapes Stabilizing Cartilage Graft, Nasal Axis Lateralization Suture Technique in Crooked Nose, and Effect of Propolis on Salivary Glands After Radiotherapy. Memberships: Turkish Medical Association and Istanbul Association of Ear, Nose, Throat and Head & Neck Surgeons.

• 2001 - Currently, İstanbul/İstanbul/Turkey
  MEMORIAL ŞİŞLİ HOSPITAL
  Chest and Cardiovacular Surgeon
• 1997 - 2001, İstanbul/İstanbul/Turkey
  FLORENCE NIGHTINGALE HOSPITAL
  Chest and Cardiovacular Surgeon
• 1992 - 1997, İstanbul/İstanbul/Turkey
  YEDİKULE PULMONARY DISEASES HOSPITAL
  Chest and Cardiovacular Surgeon
• 1990 - 1992, İzmir/İzmir/Turkey
  HATAY MILITARY HOSPITAL
  Medical Third Lieutenant

Dr. Atila Tanyeli is a professor specializing in pediatric hematology and bone marrow transplantation. He works at Memorial Şişli Hospital in Istanbul. Dr. Tanyeli treats blood disorders and cancers in children, including leukemia. He is recognized across Europe for his research in bone marrow transplantation.

• Member of the European Association for Bone Marrow Transplantation.
• Holds memberships in the Turkish and American Societies of Hematology.
• Treats acute lymphoblastic leukemia and other complex pediatric blood cancers.
• Practices at the JCI-accredited Memorial Şişli Hospital.

Dr. Oguz Acar is a neurologist at Memorial Şişli Hospital in Istanbul. He is a co-author of the textbook 'Advances and Technical Standards in Neurosurgery'. Dr. Acar specializes in treating brain and spine conditions. He manages cases of glioma, epilepsy, and various movement disorders. Dr. Acar works at Turkey's first JCI-accredited medical center.

• Published over 110 scientific papers on neurological care.
• Treats complex conditions like spine tumors and skull injuries.
• Provides care for patients with herniation and nervous disorders.
• Practices at a hospital serving patients from 160+ countries annually.

2014 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL SISLI HOSPITAL

Ophthalmologist

2011 - 2013, Istanbul/Istanbul/Türkiye

WORLD EYE HOSPITAL

Ophthalmologist

2002 - 2011, Samsun/Samsun/Türkiye

ONDOKUZ MAYIS UNIVERSITY FACULTY OF MEDICINE

Head of Department of Ophthalmology

1992 - 2011, Samsun/Samsun/Türkiye

ONDOKUZ MAYIS UNIVERSITY FACULTY OF MEDICINE

Faculty Member of the Department of Ophthalmology

1989 - 1991, Samsun/Samsun/Türkiye

SAMSUN STATE HOSPITAL

Ophthalmologist (Compulsory Service)

1983 - 1984, Ankara/Ankara/Türkiye

ÇANKAYA GOVERNMENT MEDICAL OFFICE

General Practitioner (Compulsory Service)

1982 - 1983, Zonguldak/Zonguldak/Türkiye

CAYCUMA CENTRAL HEALTH CENTER

General Practitioner (Compulsory Service)

The doctor has extensive experience in hematology, bone marrow transplant, and internal medicine, marked by significant contributions to research and numerous scientific publications. The doctor received medical education at Istanbul Medical University and specialized in Internal Medicine at Istanbul Jerrahpash University. Further training in Hematology was completed at Trakya University.

The doctor has served in various specialist roles, including at the Ankara Oncological Hospital's Hematology and Stem Cell Transplantation Clinic. The doctor is a member of multiple prestigious hematology and oncology societies.

Dr. Ahmet Nadir Tosyali is a pediatric surgeon at Anadolu Medical Center in Istanbul. He holds the Turkish Pediatric Surgery Qualification Certificate. Dr. Tosyali treats complex conditions like Wilms tumor, neuroblastoma, and spina bifida. He provides care at a clinic affiliated with Johns Hopkins Medicine.

• Specializes in neonatal surgery, pediatric urology, and oncological procedures.
• Completed training in anorectal malformations and international hypospadias repair.
• Member of the Turkish Society of Pediatric Surgery and the Pediatric Urology Society.
• Works at a Top 10 world hospital according to MTQUA rankings.

Medical Experience:

- 2024 - Present: Memorial Şişli Hospital  

 Specialist in Internal Medicine and Hematology / Istanbul

- 2017 - 2024: Istanbul Florence Nightingale Hospital  

 Specialist in Internal Medicine and Hematology / Istanbul

- 2015 - 2017: Eskişehir Yunus Emre State Hospital  

 Hematology Specialist - Compulsory Service / Eskişehir

Medical Education:

- 2020 - 2024: Istanbul Florence Nightingale Hospital  

 Demiroğlu Bilim University, Faculty of Medicine / Istanbul, Turkey

- 2017 - 2020: Istanbul Florence Nightingale Hospital  

 Demiroğlu Bilim University, Faculty of Medicine / Istanbul, Turkey

- 2011 - 2015: Eskişehir Osmangazi University, Faculty of Medicine, Department of Hematology / Eskişehir, Turkey

- 2009 - 2011: Harvard University, Faculty of Medicine / Boston, USA

- 2000 - 2008: Ankara University, Faculty of Medicine / Ankara, Turkey

- 1994 - 2000: Ankara University, Faculty of Medicine / Ankara, Turkey

Attended Professional Trainings, Courses, and Conferences:

- European Society for Blood and Marrow Transplantation, 3rd EBMT International Transplant Course, Barcelona, Course, 07.09.2018-09.09.2018 (International)

- Turkish Academy of Blood Science, Lymphoma Masterclass, Istanbul, Course, 01.09.2016-01.03.2017 (National)

- Advanced Life Support Course, Istanbul

Membership in Professional Associations:

- European Society for Blood and Marrow Transplantation

- Turkish Academy of Blood Science

- Advanced Life Support Course

Dr. Erdem Turemen is an endocrinologist at Anadolu Medical Center in Istanbul. He has authored over 25 national and international medical publications. Dr. Turemen treats diabetes, obesity, and thyroid disorders. He also manages complex diseases of the pituitary and adrenal glands.

• Specializes in Type 1 and Type 2 diabetes management.
• Treats endocrine-related cancers including thyroid and adrenal tumors.
• Performs thyroid biopsies and subtotal thyroidectomy procedures.
• Works at Anadolu Medical Center, a Top 10 global hospital by MTQUA.

Dr. Mehmet Sagir is a Specialist in Plastic, Reconstructive and Aesthetic Surgery at Memorial Bahçelievler Hospital (2025–present). He previously worked at Acıbadem Maslak Private Hospital (2020–2025). He also served as Chief Clinical Physician at Taksim Training and Research Hospital (2019–2020). Earlier, he held specialist roles in Malatya and Kastamonu.

Education: MD, Istanbul University Faculty of Medicine (2000–2007). Residency in Plastic, Reconstructive and Aesthetic Surgery, Bağcılar Training and Research Hospital (2009–2014). Membership: Turkish Medical Association. Certifications and training: Animal Experiments Usage Certificate (2012). Microsurgery Laboratory, University Hospital Zurich, Neurosurgery (2012).

Publications: 12 articles in international peer‑reviewed journals. Five in national journals. Four papers presented at international scientific meetings with proceedings.

The doctor specializes in the early detection and management of glaucoma, utilizing advanced multidiode laser treatments to minimize infection risks and avoid direct eye intervention. This approach is particularly beneficial for patients who cannot use medication.

The doctor graduated from the Gata Military School of Medicine and completed a specialization in Eye Diseases. Further education includes training at the Glaucoma Research and Education Group in San Francisco and a professorship at Near East University, School of Medicine.

The doctor is a Fellow of the European Board of Ophthalmology and an active member of several ophthalmology societies, including the American Academy of Ophthalmology.