Doctors in Turkey — Page 23

Dr. Hasim Ustunsoy is a cardiac surgeon at Anadolu Medical Center in Istanbul. He pioneered robotic cardiac surgery using the Da Vinci system in Turkey. Dr. Ustunsoy specializes in valve repair and coronary artery bypass. He provides treatment for both adults and children with complex heart conditions.

• Former Head of the Lung Transplant Center at Gaziantep University.
• Completed fellowships at Glasgow University and Columbia University in New York.
• Served as an Associate Professor at Geneva University in Switzerland.
• Member of the International Society for Heart and Lung Transplantation.

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. 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. 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.

Specialist Dr. Nurana Güller earned her medical degree and completed nephrology training at the Cerrahpaşa (Çapa) Faculty of Medicine, Istanbul University, a major academic center in Türkiye. She trained in a high-volume tertiary referral center. She contributed to multidisciplinary care for acute and chronic kidney diseases.

Her practice focuses on early CKD detection. She aims to slow progression and prevent complications. She has extensive experience in AKI management. She provides stage-specific treatment and long-term follow-up for chronic kidney failure. Her interests include hypertension, diabetic nephropathy, glomerulonephritis, UTIs, proteinuria, kidney stones, cystic diseases, dialysis, and transplantation.

Dr. Güller practices at İAÜ Medical Park. She follows evidence-based, ethical, and patient-safety principles.

Dr. Yasar Colak is a Professor of Gastroenterology at Memorial Şişli Hospital in Istanbul. He has deep expertise in liver transplantation and therapeutic endoscopy. Dr. Colak served as an invited lecturer at the Cleveland Clinic Florida. He also worked in the Presidential Health Coordinatorate in Turkey.

• Specializes in liver transplantation and digestive tract disorders.
• Completed clinical training at the Cleveland Clinic Department of Endoscopic Applications.
• Treats patients at Memorial Şişli, the first JCI-accredited hospital in Turkey.
• Formerly served as an Associate Professor at Istanbul Civilization University.

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. 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.

The doctor is a highly experienced Cardiovascular Surgery Specialist with an extensive academic and clinical background. Currently practicing at Memorial Antalya Hospital, the doctor previously served as an Associate Professor and Assistant Professor in the Department of Cardiovascular Surgery at Akdeniz University Faculty of Medicine. With a career spanning nearly two decades, the doctor has developed deep expertise in complex cardiovascular procedures, including mechanical circulatory support, ECMO-assisted cardiopulmonary resuscitation, and peripheral bypass surgeries.

The doctor has contributed significantly to medical literature, with research published in international peer-reviewed journals focusing on vascular ablation, cardiac transplantation, and graft management.

Dr. Mustafa Saglam is the Head of the Cardiology Department at Hisar Hospital Intercontinental. He is a cardiologist and vascular surgeon specializing in aortic aneurysm repair and heart valve procedures. Dr. Saglam trained at Marmara University and Kosuyolu Heart Teaching and Research Hospital. He works at a JCI-accredited facility in Istanbul.

• Performs endovascular repair of abdominal aortic aneurysms.
• Treats coronary artery disease, arrhythmia, and hypertension.
• Proficient in balloon valvuloplasty and temporary pacemaker implantation.
• Conducts diagnostic imaging including stress tests and ambulatory cardiac monitoring.

Dr. Abdullah Yakupoglu is an interventional radiologist at Memorial Şişli Hospital in Istanbul. He specializes in interventional oncology. Dr. Yakupoglu has held several leadership roles at major Turkish medical centers. He works at a JCI-accredited facility known for its high success rates in complex procedures.

• Served as the Interventional Radiology Manager at Acıbadem Health Group.
• Former Interventional Radiology Manager at both American Hospital and German Hospital.
• Focuses on minimally invasive techniques for treating oncological conditions.
• Practices at the first Turkish hospital to earn Joint Commission International accreditation.

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.

Dr. Servet Izci is a cardiologist with 24 years of clinical practice. He earned his MD at Fırat University (1996–2002). He completed a cardiology residency at Kartal Koşuyolu Training and Research Hospital (2010–2015). He worked as a consultant cardiologist at Kartal Koşuyolu (2015–2025) and Pendik Medical Park (2025–2026). He now practices at Lokman Hekim Istanbul Hospital (2026–present). He is a member of the Istanbul Medical Chamber and the Turkish Society of Cardiology.

Clinical focus: coronary angiography and stenting via radial access. He also performs peripheral and carotid artery interventions. He manages arrhythmias, hypertension, hyperlipidemia, and heart failure. Scientific output: three publications. Topics include catestatin as a predictor of mortality in acute pulmonary embolism, ECG changes during alcohol withdrawal, and the increased risk of high‑grade AV block in non‑O blood types.

Dr. Koray Tuncer is a gastroenterology specialist at Memorial Şişli Hospital in Istanbul. He has contributed to medical science with 18 professional publications. Dr. Tuncer translates clinical findings into practice through 49 national and international presentations. He works at a JCI-accredited facility known for world-class patient safety standards.

• Completed gastroenterology fellowships at Haydarpaşa Numune Hospital and Ege University.
• Maintains membership in the Turkish Association for the Study of the Liver.
• Completed clinical internships at Kantonsspital Aarau and Kantonsspital Münsterlingen in Switzerland.
• Is an active member of the Turkish Society of Gastroenterology.

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.

Assoc. Prof. Dr. Servet İğrek is an Orthopaedics and Traumatology specialist trained at Marmara University. He practices at Diyarbakır Selahaddin Eyyubi State Hospital and Kartal Dr. Lütfi Kırdar City Hospital.

He focuses on sports injuries and arthroscopic surgery. He has extensive experience in knee, shoulder, hip and ankle arthroscopy; ligament and meniscus surgery; shoulder instability; cartilage injuries; arthroplasty; and orthopaedic trauma.

He completed a SECEC & ESSKA‑approved Sports Surgery Fellowship Program. He has authored or co‑authored many peer‑reviewed publications, book chapters and congress presentations. He teaches in national and international arthroscopy training programs. He is an active member of the Turkish Orthopaedics and Traumatology Association, TUSYAD, the Turkish Shoulder and Elbow Surgery Association, the Hip and Knee Arthroplasty Association, and SICOT.

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.

The doctor is a highly experienced Ophthalmology Specialist currently practicing at Memorial Şişli Hospital and a private clinic in Istanbul. With a career spanning several years in prestigious medical institutions, the doctor has previously served as an Ophthalmology Specialist at Liv Hospital Ulus.

The doctor completed medical training at the Azerbaijan Medical University and furthered clinical expertise through specialized education at Selcuk University Faculty of Medicine. The professional focus remains on delivering comprehensive eye care and diagnostic services within the field of ophthalmology.

Dr. Serhat Seyhan is the Head Physician at the Genetic Disorders Evaluation Center in Istanbul. He is a medical genetics specialist based at Memorial Şişli Hospital. Dr. Seyhan completed his genetic training at Karadeniz Technical University. He also gained international perspective as a scholar at the University of Miami.

• Former Chair of the Department of Medical Genetics at Istanbul Medipol University.
• Served as Head Physician for genetic centers at two major Turkish university hospitals.
• Member of the medical team at JCI-accredited Memorial Şişli Hospital.
• Expert in evaluating complex hereditary conditions and clinical genetic diagnostics.