Doctors in Istanbul, Turkey — Page 20

Dr. Oya Ercan is a pediatric endocrinologist at Memorial Şişli Hospital in Istanbul. She founded the Adolescent Science Branch at Cerrahpaşa Medical Faculty. Dr. Ercan specializes in hormonal disorders in children and teenagers. She previously served as visiting Chief Resident at Middlesex Hospital in London.

• Current Head of the Department of Pediatric Endocrinology at Cerrahpaşa Medical Faculty.
• Treats a wide variety of pediatric endocrine and cellular conditions.
• Practices at JCI-accredited Memorial Şişli Hospital, a leading center for specialized care.
• Holds nearly four decades of clinical experience in Turkish and British medical systems.

Dr. Ahmet Nevzat Nayir is a pediatric nephrology specialist at Memorial Şişli Hospital in Istanbul. He serves as a Professor at the Istanbul Faculty of Medicine. Dr. Nayir specializes in treating kidney and urinary tract conditions in children. He works at the first hospital in Turkey to earn JCI accreditation for safety.

• Holds a professorship in the Division of Children's Nephrology.
• Treats complex pediatric kidney diseases at a leading multidisciplinary medical center.
• Practices at a facility with a 90% success rate in organ transplantation.
• Maintains an academic role alongside his clinical practice at Memorial Şişli.

Dr. Naci Karaagac is a neurology specialist at Memorial Şişli Hospital in Istanbul. He has maintained a clinical presence at Cerrahpaşa Medical Faculty since 1982. Dr. Karaagac treats patients at one of Turkey’s most established private medical centers. He works within a JCI-accredited facility that holds world-class safety standards.

• Practices at Memorial Şişli Hospital, the first JCI-accredited center in Turkey.
• Served as a neurology specialist at the American Hospital and German Hospital.
• Completed medical service as a specialist at Maslak Military Hospital.
• Treats a variety of neurological conditions within a multidisciplinary hospital setting.

Dr. Cemile Dilek Uysal is a dermatologist at Hisar Hospital Intercontinental in Istanbul. She graduated with honors from Akdeniz University. Dr. Uysal treats various skin conditions, including acne, eczema, and psoriasis. She also manages parasitic diseases such as scabies and hair disorders like alopecia.

• Specializes in medication therapy for acne and viral or bacterial skin diseases.
• Treats fungal infections and complex cases of chronic pruritus or itching.
• Works at Hisar Hospital, a JCI-accredited facility meeting high safety standards.
• Provides care at a center serving over 500,000 international patients annually.

Dr. Ozan Ali Erdal is a pediatric orthopedic surgeon at Lokman Hekim Istanbul Hospital. He specializes in treating cerebral palsy and osteogenesis imperfecta. He focuses on deformity correction and limb lengthening. Dr. Erdal performs complex surgeries for congenital bone deficiencies and hip dislocation. He works at a JCI-accredited facility that treats 10,000+ patients annually.

• Specializes in clubfoot (PEV) treatment and height extension procedures.
• Treats pediatric fractures, malunions, and chronic foot deformities.
• Completed medical specialization at Istanbul University-Cerrahpaşa.
• Corrects congenital conditions like fibular hemimelia and bowlegs.

Dr. Umit Tuncel is an ENT specialist at Lokman Hekim Istanbul Hospital. He spent 15 years in clinic leadership roles across three major Turkish medical centers. Dr. Tuncel specializes in head and neck cancers and sleep apnea surgery. He treats both adults and children for ear, nose, and throat conditions.

• Former Head of Clinic at Ankara Oncology Training and Research Hospital.
• Focuses on rhinoplasty and pediatric ENT diseases.
• Works at JCI-accredited Lokman Hekim Istanbul Hospital.
• Practices at a facility holding ISO 9001 quality management certification.

2021 - Currently, İstanbul

ASSOCIATE PROFESSOR

ASSOCIATE PROFESSOR

2009 - 2012, İstanbul / Turkey

T.R. ISTANBUL SCIENCE UNIVERSITY EUROPEAN FLORENCE NIGHTINGALE HOSPITAL

Minor Specialization Training

2003 - 2008, İstanbul / Turkey

ŞİŞLİ HAMİDİYE ETFAL EDUCATION AND RESEARCH HOSPITAL

Assistant Physician

1990 - 1996, Ankara / Turkey

GAZİ UNIVERSITY FACULTY OF MEDICINE

Medical Doctor Training

Dr. Onur Telli is a urologist and pediatric specialist at Memorial Şişli Hospital. He focuses on diagnosing and treating congenital urogenital anomalies. He has received awards from the European Association of Urology and the European Society for Pediatric Urology. Dr. Telli works at a JCI-accredited facility in Istanbul.

• Published over 50 international articles and contributed to three pediatric urology books.
• Conducted population-based research on nocturia in women of reproductive age.
• Member of the American Academy of Pediatrics Section on Urology.
• Member of the Turkish Association of Pediatric Urology.

Dr. Gulsah Ozturk Ozluk is a neurosurgeon at Memorial Şişli Hospital in Istanbul. She completed her specialized medical training at Johns Hopkins University in the United States. Dr. Ozluk later gained clinical experience at Oregon Health and Science University. She treats patients at a JCI-accredited facility known for its high organ transplant success rates.

• Completed neurosurgery specialization training at the prestigious Johns Hopkins University.
• Obtained clinical training at Oregon Health and Science University.
• Works at Memorial Şişli Hospital, the first hospital in Turkey to earn JCI accreditation.
• Previously served as a neurosurgery specialist at Acibadem Health Group.

Dr. Bingur Sonmez is the Head of Cardiovascular Surgery at Memorial Şişli Hospital. He specializes in heart surgery and minimally invasive techniques. Dr. Sonmez completed his cardiac surgical training at Istanbul University. He later served as Chief Resident of Cardiovascular Surgery at St. Thomas Hospital in London.

• Leads the cardiac surgery department at a JCI-accredited medical center.
• Former Head of Surgical Sciences at Florence Nightingale Hospital.
• Treats patients at a facility with a 90% organ transplant success rate.
• Completed major international residency training in the United Kingdom.

Dr. Nurettin Demirkol is an internal medicine specialist at Hisar Hospital Intercontinental in Istanbul. He focus on the management of hypertension, diabetes, and thyroid diseases. Dr. Demirkol holds a master’s degree in Health Management from Okan University. He has attended over 20 national medical congresses to date.

• Specializes in treating chronic conditions like hyperlipidemia and vascular problems.
• Performs etiology and diagnosis studies for complex medical cases.
• Completed residency training in internal medicine at Istanbul University.
• Works at a JCI-accredited hospital that treats 500,000+ patients annually.

The doctor has a background in Nutrition and Dietetics, having completed a bachelor's degree from Gumushane University. They have professional experience working in various health and wellness centers, including Diettherapy Nutrition and Diet Counseling Center, Mestetik Aesthetics and Beauty Center, and Estetica Beauty and Aesthetic Center. Additionally, the doctor has contributed to fitness and dietary services at Academy Fitness and Zafiran Restaurant, focusing on diet therapy and nutritional counseling.

Dr. Omer Necip Aytug is a gastrointestinal surgeon and gastroenterologist at Hisar Hospital Intercontinental. He has attained the rank of Professor and specializes in complex digestive tract procedures. Dr. Aytug treats conditions like Crohn's disease, ulcerative colitis, and Barrett's esophagus. He works at a JCI-accredited facility that serves over 500,000 patients every year.

• Performs stomach, gallbladder, and small intestine resections.
• Expert in laparoscopic anti-reflux surgery and duodenal polyp removal.
• Authored numerous papers and book chapters on gastroenterology.
• Conducts advanced diagnostics including capsule endoscopy and colonoscopy with biopsy.

Dr. Ibrahim Erdim is an ENT specialist at Lokman Hekim Istanbul Hospital. He specializes in rhinoplasty, head and neck cancer surgery, and pediatric ENT. Dr. Erdim developed the Nasal Axis Lateralization Suture Technique for crooked nose correction. He works at a JCI-accredited facility that treats 10,000+ patients annually.

• Authored the Stapes Stabilizing Cartilage Graft technique for middle ear surgery.
• Published research on the effects of propolis on salivary glands after radiotherapy.
• Member of the Istanbul Association of ENT and Head & Neck Surgeons.
• Expertise includes neurotology and medical facial aesthetic procedures.

Dr. Suveyda Gozukucuk is an infectious disease specialist at Hisar Hospital Intercontinental in Istanbul. She focuses on hospital-acquired infections and sterilization protocols. Dr. Gozukucuk also treats viral hepatitis and hepatitis C cases. She practices at a JCI-accredited facility recognized for high safety standards.

• Specializes in infection management for immunocompromised patients.
• Expertise in hospital sterilization and disinfection procedures.
• Completed medical specialization at Erciyes University Faculty of Medicine.
• Treats patients at a hospital serving over 500,000 people annually.

Dr. Turker Sahiner is a neurologist at Memorial Şişli Hospital in Istanbul. He is the founding president of the Alzheimer's Association Denizli Branch. Dr. Sahiner specializes in treating Alzheimer's disease and epilepsy. He works at the first hospital in Turkey to earn JCI accreditation.

• Member of the International Society to Advance Alzheimer’s Research and Treatment.
• Holds membership in the Society for Neuroscience.
• Completed neurology specialization training at Ondokuz Mayis University.
• Member of the Turkish Brain Research and Neuroscience Association.

Dr. Yasemin Ongun is an ENT and Head & Neck Surgery specialist at Hisar Hospital Intercontinental. She focuses on rhinoplasty, endoscopic sinus surgery, and pediatric procedures. Dr. Ongun completed specialized training in Otology-Neurotology and Audiology at Hacettepe University. She serves at a JCI-accredited medical center in Istanbul.

• Performs endoscopic endonasal dacryocystorhinostomy for tear duct obstructions.
• Treat pediatric conditions including tonsil, adenoid, and ear tube surgeries.
• Specializes in snoring and sleep apnea surgical treatments.
• Former deputy chief physician with years of experience in private healthcare.

Dr. Omer Kamil Dogan is a senior ophthalmologist at Hisar Hospital Intercontinental in Istanbul. He specializes in cornea transplantation and corneal diseases. Dr. Dogan currently heads the Ophthalmology Department at Hisar Hospital. He holds a professorship from Selcuk University Faculty of Medicine.

• Authored over 170 scientific publications and 3 book chapters.
• Treats complex conditions including glaucoma and cataracts.
• Performs specialized corneal and conjunctival surgeries.
• Practices at a JCI-accredited hospital serving 500,000 patients annually.

Medical Experience

- *2024 - Present*: Memorial Şişli Hospital  

 Ophthalmology Specialist / Istanbul

- *2022 - Present*: Private Clinic  

 Ophthalmology Specialist / Istanbul

- *2019 - 2022*: Liv Hospital Ulus  

 Ophthalmology Specialist / Istanbul

Medical Education

- *2014 - 2018*: Selcuk University Faculty of Medicine  

 / Konya / Turkey

- *2004 - 2010*: Azerbaijan Medical University Faculty of Medicine  

 / Baku / Azerbaijan