Best Doctors in Istanbul

Dr. Birol Baysal is a gastroenterology specialist at Memorial Şişli Hospital in Istanbul. He has held clinical and academic roles at major Turkish medical institutions. Dr. Baysal serves as a lecturer in gastroenterology at Bezmialem Foundation University. He works at a JCI-accredited facility known for its high clinical safety standards.

• Treats a variety of digestive system disorders and colorectal conditions.
• Served as a gastroenterology specialist at Diyarbakir Training and Research Hospital.
• Practices at Memorial Şişli, the first hospital in Turkey to earn JCI accreditation.
• Maintains a clinical focus on internal medicine and digestive health.

Dr. Servet Alan is a specialist in infectious diseases and clinical microbiology at Memorial Şişli Hospital. He holds a Master’s degree in pediatric infectious diseases from Istanbul University. Dr. Alan also earned a Master’s in hospital and healthcare management. He treats patients at a JCI-accredited facility known for world-class safety standards.

• Member of the Klimik Association and the Turkish Society of Microbiology.
• Active member of the Association for Hospital Infections and Control.
• Served as a specialist at Haseki Training and Research Hospital for 15 years.
• Participates in numerous international microbiology congresses and seminars.

Dr. Mustafa Ozdogan is a professor and medical oncology specialist at Memorial Göztepe Hospital. He is the current President of the Antalya Breast Cancer Association. Dr. Ozdogan previously led oncology departments at Memorial Antalya and Medstar Antalya hospitals. He focuses on a multidisciplinary approach to complex cancer care.

• Sits on the board of the Turkish Society of Medical Oncology.
• Maintains active membership in ESMO and ASCO.
• Co-chairs the national working group for head and neck cancers.
• Works at Memorial Göztepe, which features MR Linac and robotic surgery systems.

Dr. Toluy Ozgumus is a hematologist at Hisar Hospital Intercontinental in Istanbul. He has diagnosed and treated over 1,000 patients with bleeding and coagulation disorders. He specializes in the treatment of rare hematological cancers and bone marrow transplantation. Dr. Ozgumus works at a JCI-accredited facility recognized for excellence in hematology-oncology.

• Performs allogenic bone marrow transplants from both related and unrelated donors.
• Treats complex blood cancers including acute leukemia, multiple myeloma, and lymphomas.
• Expert in managing hematological findings related to Covid-19 infections.
• Differentiates myeloproliferative diseases from other causes of blood cell elevation.

Dr. Remziye Dogan is a cardiologist at Hisar Hospital Intercontinental in Istanbul. She specializes in the diagnosis and treatment of coronary artery disease and heart failure. Dr. Dogan serves at a JCI-accredited facility that treats 500,000+ patients annually.

• Performs coronary angiography, balloon angioplasty, and stent placement.
• Expert in transesophageal echocardiography (TEE) for heart valve diseases.
• Treats arrhythmias using Holter monitoring and medical management.
• Manages complex hypertension and pulmonary hypertension cases.

Dr. Gokhan Ertas is a Professor of Cardiology at Memorial Şişli Hospital in Istanbul. He has published 52 articles in international peer-reviewed journals. Dr. Ertas treats complex conditions like atrial fibrillation, coronary artery disease, and heart valve disorders. He practices at a JCI-accredited facility known for its high success rates in cardiovascular care.

• Member of the European Society of Cardiology and Turkish Society of Cardiology.
• Performs heart valve replacement and coronary stenting.
• Completed a research fellowship at the Thorax Center in the Netherlands.
• Contributed to three medical books on cardiovascular medicine.

Dr. Mehmet Saygi is a cardiology specialist at Hisar Hospital Intercontinental in Istanbul. He has performed over 2,500 coronary angiographies throughout his career. Dr. Saygi specializes in the diagnosis and treatment of coronary artery disease and heart failure. He works at a JCI-accredited facility that serves 500,000+ patients annually.

• Performed over 300 stent and balloon procedures.
• Expert in transesophageal echocardiography and holter monitoring for arrhythmias.
• Treats complex cardiovascular conditions including heart valve diseases and hypertension.
• Trained at Siyami Ersek Thoracic and Cardiovascular Surgery Training Hospital.

Dr. Mustafa Temel is an ophthalmologist at Memorial Şişli Hospital in Istanbul. He has dedicated his career to eye care since starting his medical practice in 1985. Dr. Temel previously served as a specialist at GATA Training Hospital and various marine hospitals. He works at a JCI-accredited facility recognized for world-class safety standards.

• Specializes in general ophthalmology and eye health diagnostics.
• Completed specialist training at GATA Training Hospital.
• Treats international patients at one of Turkey's premier multidisciplinary centers.
• Practices at a clinic that holds ISO quality certification.

Dr. Merve Karli is a general surgeon at Hisar Hospital Intercontinental in Istanbul. She has performed over 1,000 operations for hernias, breast diseases, and anorectal conditions. Dr. Karli trained at Eskisehir Osmangazi University and Sadi Konuk Training and Research Hospital. She holds official certifications to perform endoscopic procedures.

• Specializes in laparoscopic and open hernia repair, including umbilical and incisional cases.
• Performs gastroscopy, colonoscopy, and PEG insertion for diagnostic and therapeutic needs.
• Treats benign anorectal diseases and manages complex breast disease cases.
• Works at Hisar Hospital, a JCI-accredited facility serving 500,000+ patients annually.

Dr. Sinan Çomu is a pediatric neurologist at Memorial Şişli Hospital in Istanbul. He applies American treatment methods learned during his extensive training in the USA. Dr. Çomu treats movement disorders, epilepsy, and developmental delays in children. He is a member of the Child Neurology Society.

• Specializes in pediatric neurology, genetic problems, and behavioral disorders.
• Completed a child neurology residency at the University of Pittsburgh.
• Treats neurological conditions in fetuses during high-risk pregnancies.
• Practices at JCI-accredited Memorial Şişli Hospital.

Dr. Erdem Akbal is a gastroenterologist at Memorial Şişli Hospital and Memorial Bahçelievler Hospital. He has authored over 100 international indexed publications. Dr. Akbal completed specific training in interventional endoscopy at Jichi Medical University in Japan. He holds academic rank as a professor.

• Completed training for endoscopic ultrasound at Johns Hopkins Hospital in the USA.
• Trained in POEM and gastrointestinal motility at Amsterdam Medical Center.
• Member of the Turkish Society of Gastroenterology and the Gastrointestinal Endoscopy Society.
• Works at Memorial Şişli, the first hospital in Turkey to earn JCI accreditation.

Dr. Oguzhan Babacan is a pediatric hematologist-oncologist at Hisar Hospital Intercontinental in Istanbul. He specializes in bone marrow transplantation for children with leukemia and lymphoma. Dr. Babacan has performed allogeneic, autologous, and haploidentical stem cell transplants for 13 years. He treats rare blood disorders and solid tumors in pediatric patients.

• Performs complex bone marrow transplants for leukemia and lymphoma cases.
• Treats childhood blood disorders like thalassemia, hemophilia, and aplastic anemia.
• Expertise in pediatric oncology, including neuroblastoma and Ewing's sarcoma.
• Works at Hisar Hospital, a JCI-accredited facility in Turkey.

Prof. Dr. Şule Karadayı is a Professor and Thoracic Surgery Specialist. She earned her MD from Ankara University in 1999 and completed her residency in 2004. Her international training includes an observership with Prof. Ramon Rami Porta in Barcelona in 2005. She received an ESTS Travel Fellowship in Vienna in 2009. She joined the Mevlana Exchange Program in Azerbaijan in 2015. She scored 76.25 on the ÜDS English exam in 2006. She is a member of the European Society of Thoracic Surgeons and several Turkish thoracic societies.

Her clinical focus includes lung cancer surgery. She performs Da Vinci robotic and VATS/minimally invasive thoracic procedures. She treats pulmonary nodules and masses. She also performs mediastinal, pleural, and chest wall (pectus) surgery. She offers interventional bronchoscopy, including endobronchial valve therapy for advanced emphysema and COPD. She serves as an assistant principal investigator on projects in wound healing and mediastinal lymph node evaluation. As of 2026, she sees patients at Hisar Hospital Intercontinental.

Dr. Savas Kansoy is a pediatric hematologist and oncologist at Anadolu Medical Center. He founded Turkey’s first pediatric bone marrow transplantation units. Dr. Kansoy treates children with leukemia, lymphoma, and aplastic anemia. He is a primary contributor to national stem cell transplant registries.

• Founded pediatric oncology and bone marrow transplant clinics across major Turkish hospitals.
• Performs haploidentical, allogenic, and autologous stem cell transplantations.
• Served as a board member of the Turkish Society of Hematology.
• Works at Anadolu Medical Center, an affiliate of the Johns Hopkins Hospital.

Dr. Leyla Elmas is a dermatology specialist at Memorial Bahçelievler Hospital in Istanbul. She was named the 2023 ASDS International Dermatology Specialist of the Year. Dr. Elmas graduated second in her medical class from Istanbul University – Cerrahpaşa. She treats a variety of skin conditions and performs diagnostic dermatological procedures.

• Completed research and observerships at Harvard, Johns Hopkins, and King’s College London.
• Received the 2024 AAD Strauss & Katz World Congress Scholarship.
• Published 10 articles in international peer-reviewed journals.
• Holds a national patent for a medical innovation.

Dr. Ali Osman Koyuncuoglu specializes in obstetrics, gynecology, and IVF at Memorial Bahçelievler Hospital. He has practiced reproductive medicine for two decades at top Turkish medical centers. Dr. Koyuncuoglu holds memberships in the American Society for Reproductive Medicine and ESHRE.

• Completed training at Brussels IVF Center and the Regionshospitalet Skive IVF in Denmark.
• Trained in robotic surgery at Acıbadem University and laparoscopic techniques at IRCAD Strasbourg.
• Maintains expertise in reproductive endocrinology through the Turkish Society of Reproductive Medicine.
• Works at JCI-accredited Memorial Bahçelievler Hospital, an eco-friendly facility in Istanbul.

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. Mehmet Halis Cerci is an orthopedics and traumatology specialist at Memorial Şişli Hospital in Istanbul. He gained significant experience during his specialized training at the Gülhane Military Medical Academy. Dr. Cerci served as a medical officer for the Turkish Naval Forces Command before entering private practice. He treats a variety of musculoskeletal conditions and traumatic injuries.

• Practices at the JCI-accredited Memorial Şişli Hospital.
• Completed residency training at the Gülhane Military Medical Academy.
• Served as a medical officer in the Turkish Naval Forces.
• Expertise in general orthopedics and traumatology.