Page 6 - Best diagnosticians: TOP 336 doctors

Dr. Esra Esim Buyukbayrak is an obstetrics and gynecology specialist and a perinatology (maternal–fetal medicine) subspecialist. She has practiced at Memorial Göztepe Hospital since 2025. She served as Head of Department and Clinical Administrative and Training Director at the Marmara University Faculty of Medicine from 2022 to 2025. From 2015 to 2025, she worked at Marmara University Pendik Training and Research Hospital as a perinatology subspecialist. She also served there as associate professor and later professor.

She holds an MD from Marmara University. She completed residency in obstetrics and gynecology and subspecialty training in perinatology. She received WHO–IAMANEH reproductive health training in Geneva in 2004. She completed advanced obstetrics and gynecology training in 2013. She trained in fetal surgery at Centro Gestar, Brazil, in 2023.

She has 86 SCI/SSCI-indexed articles and 84 nationally indexed articles. She has delivered 51 international and 40 national congress presentations. She has written 9 book chapters and supervised 15 doctoral dissertations. She serves as a reviewer and editorial board member for several journals.

Dr. Salih Taskin is a specialist in obstetrics and gynecology. He also focuses on gynecologic oncology and minimally invasive surgery. He works at Memorial Göztepe Hospital in Istanbul (2025–present). He previously served in Gynecologic Oncology (2014–2025) and in Obstetrics and Gynecology (2002–2025) at the Ankara University Faculty of Medicine.

Accreditations include ESGO Certified Specialist in Gynecologic Oncology (2018) and a fellowship in robotic surgery and gynecologic oncology at McGill University (2014). He completed an OB‑GYN residency at Ankara University and earned his MD at Çukurova University (both 1995–2001).

He is a member of the Turkish Society of Gynecologic Oncology; the Society of Robotic Gynecologic Surgery; the Society of Minimally Invasive Gynecologic Oncology; the Federation of Women’s Health Associations; IGCS; ESGO; ESGE; and SERGS. He is trained in robotic, laparoscopic, and gynecologic cancer surgery.

Dr. Nezih Onur Ermerak is a Thoracic Surgery Specialist at Memorial Göztepe Hospital (2025–). He previously worked in the Department of Thoracic Surgery at Marmara University (2009–2025). He also served at Kilis State Hospital during compulsory service and war surgery (2015–2017).

He completed a Thoracic Surgery fellowship at Washington University in St. Louis (2019–2020). He then completed a Thoracic & Esophageal Surgery fellowship at Dalhousie University (2020–2022). He held a visiting fellowship at Universitätsspital Bern (2011–2012). He finished his residency at Marmara University (2009–2015).

He is President of the Turkish Society of Chest Wall Deformities and Pectus. He served on the Organizing Committee of CWIG 2023 in Istanbul. He completed MI-STARs (2020), MITS (2019), CITI (2024), and KOÇ Laboratory Animal Use certification (2025). He attended the AATS 103rd meeting (2023) and European Thoracic Surgery conferences (2024 and 2025).

Dr. Mehmet Altug Tuncer is a Cardiovascular Surgery Specialist at Memorial Göztepe Hospital (2025–present). He has been Head of Cardiovascular Surgery at Istanbul University Faculty of Medicine since 2018. He has served as an Instructor at Kartal Koşuyolu since 2013. He directed the Aortic Surgery Center there from 2016 to 2018.

He became Professor in 2018 at Istanbul Okan University. He was appointed Associate Professor in 2013. He earned his MD at Istanbul University Cerrahpaşa. He completed cardiovascular surgery training at Koşuyolu. His work includes 38 SCI/SCI-E papers, 19 national articles, and one book.

He is Chairman of the Aortic Surgery Working Group of the Turkish Society of Cardiovascular Surgery. He is a member of the Turkish Medical Association. He also belongs to the Society of Minimally Invasive and Robotic Cardiovascular Surgery. He is a member of the Turkish Society of Clinical Microbiology and Infectious Diseases.

Dr. Koray Karabulut is a general surgery specialist at Memorial Göztepe Hospital (2025–). His focus is HPB surgery, liver transplantation, and robotic or minimally invasive surgery. He was the responsible specialist at the Fırat University Liver Transplant Center (2014–2018). He then worked as an organ transplantation specialist at Memorial Şişli (2018–2019). In 2024, he worked in robotic HPB surgery at Ageo Medical Center.

Training highlights include minimally invasive HPB at IRCAD (2015). He completed a research fellowship at the Cleveland Clinic on liver tumors and laparoscopic‑robotic surgery (2010–2011). He also completed liver transplant training at the İnönü University Institute (2011–2012). He earned his MD and finished his general surgery residency at Istanbul University. He became an associate professor in 2013. His academic work includes peer‑reviewed papers in J Gastrointest Surg, Surgery, and Surg Endosc. He has written surgical book chapters. He is a guideline author for the Turkish Surgical Society and served on editorial boards (2011–2016).

Dr. Tolga Sinan Guvenc is a cardiologist at Memorial Göztepe Hospital (2025–). He previously worked at VM Medical Park Pendik (2019–2025) and at Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital (2014–2018).

He has authored over 200 scientific articles and book chapters. He serves on the Editorial Board of Scientific Reports.

He is a Fellow of the ESC Heart Failure Association. He is also a member of the Turkish Society of Cardiology, the European Society of Cardiology, and Sigma Xi.

Advanced training includes a clinical fellowship in the Advanced Heart Failure Unit at the University of Alberta. He also served as a visiting scientist at the Echocardiography Station at the University of Alabama at Birmingham. Education: MD, Istanbul University Cerrahpaşa (English). Cardiology residency, Dr. Siyami Ersek.

Dr. Ahmet Mutlu is an ENT specialist at Memorial Göztepe Hospital (2025–present). He holds European Board certification in ORL‑HNS (FEBORL‑HNS, 2018) and National ENT Board certification (2016). Education: MD, Kocaeli University (2011). ENT residency, Kocaeli University (2011–2016). Master’s in Audiology, Başkent University (2017).

Previous posts: Istanbul Medeniyet University (2019–2025). Üsküdar State Hospital (2016–2019). Kocaeli University (2011–2016). Training: Otology‑Neurotology School (2019–2020). Laryngology & Phoniatrics School (2021–2022). Portmann Institute microsurgery course (2013). Memberships: Turkish ORL‑HNS, Istanbul ENT Assoc., Otology‑Neurotology, Phoniatrics, Turkish Medical Association.

Professor, specialist of ophthalmology

Dr. Cevat Azeroglu is a radiologist. He graduated from the Tabriz University Faculty of Medicine in 1987. He completed his radiology specialization at Ondokuz Mayıs University in 2011. Born in 1959, he provides advanced imaging to support accurate, timely decisions for many specialties.

His expertise includes conventional radiology with X-rays for musculoskeletal and chest disease. He performs ultrasound of the abdomen, thyroid, vessels, and soft tissues. He interprets CT and MRI for neurological, cardiovascular, and oncologic conditions. He practices interventional radiology with image-guided, minimally invasive procedures. He also focuses on oncologic imaging for staging and follow-up. He is known for diagnostic precision, use of modern imaging tools, and strong teamwork.

Dr Erdem Gelegen is an ophthalmologist with over 20 years of experience in cataract, refractive, retinal, glaucoma, and corneal/anterior segment care. He performs phacoemulsification with premium intraocular lenses. He provides laser vision correction for myopia, hyperopia, and astigmatism. He treats diabetic retinopathy, age-related macular degeneration, retinal detachment, keratoconus, and anterior segment disorders, including corneal transplants.

He graduated from Istanbul University Cerrahpaşa Faculty of Medicine in 1999. He completed his ophthalmology residency at Okmeydanı Training and Research Hospital in 2004. He is known for precise microsurgery and the use of advanced ophthalmic technologies.

Dr. Ozlem Yogurtcu is a general surgeon with extensive experience. She graduated from Dokuz Eylul University Faculty of Medicine. She completed her general surgery residency at Haseki Training and Research Hospital, 1st Surgical Clinic. She is fluent in English.

Her practice includes gastrointestinal surgery (gallbladder disease, hernias, appendicitis, other gastrointestinal conditions). It also includes endocrine surgery (thyroid, parathyroid, adrenal) and breast surgery (benign and malignant conditions). She treats emergency and trauma cases. She performs minimally invasive laparoscopic procedures.

She is known for precise surgery and a patient-centered approach.

Dr. Derya Zengin Metli is a physician specialized in physical therapy and rehabilitation. She graduated from Akdeniz University Faculty of Medicine. Her practice includes physical therapy and physiotherapy services. She also consults in English.

Her clinical scope includes musculoskeletal rehabilitation for back, neck, and joint pain, and herniated discs. She provides neurological rehabilitation for stroke and multiple sclerosis. She also offers post-surgical rehabilitation after orthopedic and neurosurgical procedures, sports injury prevention and treatment, and chronic pain management for fibromyalgia and arthritis.

Dyt. Yaren Nur Güngör is a dietitian. She graduated from the Faculty of Nutrition and Dietetics. She provides evidence-based, personalized nutrition counseling in English. She designs tailored programs for health promotion, disease management, and weight control.

Her clinical focus includes diet plans for diabetes, heart disease, thyroid disorders, and other metabolic issues. She also guides weight loss and gain and improves body composition. She offers sports nutrition and nutrition care for children and teens. She provides preventive nutrition with lifestyle counseling. Her approach is patient-centered and motivating.

Dr. Bentov Amir is a pediatrician and pediatric gastroenterologist with over 22 years of clinical experience. He specializes in treating pediatric inflammatory bowel diseases, celiac disease, and eosinophilic esophagitis. He is also skilled in performing endoscopic procedures in children.

Dr. Amir earned his medical degree at Tel Aviv University. He completed his training in pediatrics and pediatric gastroenterology at Dana-Dwek Children's Hospital. He lectures at Tel Aviv University and is a member of several professional organizations, including the European Society of Pediatric Gastroenterology, Hepatology and Nutrition. Dr. Amir is recognized for his clinical work and academic contributions in his field.

• Education
• 1992-1999 - Faculty of Medicine, Technion.
• Specialization
• 2000-2005 - Internship, Institute of Visualization, Tel Aviv Sourasky Medical Center (Ichilov).
• Recognized experience
• Diagnostic radiology
• Subspecialization:
• 2005-2007 - Breast imaging, Mammography Institute, Tel Aviv Medical Center.
• Additional education
• 2008 - MRI of the mammary gland, internship at the Medical Center of the Curie Institute, Paris, France.
• 2012 - Training period in advanced breast imaging technologies at the Gustave Roussy Cancer Center, Villejuif, France.
• 2009,2011,2013 - Updated courses on breast visualization.
• Clinical experience
• 2013 - Director of the Mammography Department, Tel Aviv Medical Center.
• 2007 - Maccabi HMO Breast Imaging Consultant.
• 2005 - Senior Physician, Sourasky Medical Center, Tel Aviv.
• 2000-2005 - Internship, Institute of Visualization, Sourasky Medical Center, Tel Aviv.
• 1999-2000 - Internship, Sheba Medical Center.
• Academic experience
• 2010- Breast imaging training for medical students in clinical years, Department of Imaging, Faculty of Medicine, Tel Aviv University
• 2013 - Lecturer for surgical interns, School of Continuing Education, School of Medicine, Tel Aviv University.
• 2000-2005 - Lecturer in Visualization at the School of Radiography, Sourasky Medical Center, Tel Aviv, Bar-Ilan University.
• Trade union membership
• Israel Association of Radiologists
• Breast Imaging Department
• Israel Medical Association
• North American Society of Radiology.
• Areas of special interest and activities
• Breast biopsy and preoperative MRI-guided marking.
• Breast visualization in automated 3D ultrasound.
• Removal of breast lumps using non-invasive radiofrequency technology (BLES).
• Mammography with the introduction of a contrast agent.
• Molecular Breast Imaging, MBI (Molecular Breast Imaging)

Dr. Ulvi Mehmet Meral is a General Surgery Specialist at Memorial Bodrum Hospital. He has worked there since 2025.

From 2024 to 2025, he was a Faculty Member in General Surgery at Kayseri City Training and Research Hospital. He previously served as a General Surgery Specialist at Kayseri State Hospital (2021–2024) and İzmir Katip Çelebi University Atatürk Training and Research Hospital (2016–2021). He also served at the ISAF Atatürk Role-2 Military Hospital in Afghanistan (2013–2014) and at İzmir Military Hospital (2012–2016). He was Chief Physician at the 25th Mechanized Infantry Brigade Infirmary (2005–2007).

He earned his M.D. (1998–2004) at Gülhane Military Medical Academy. He completed his General Surgery specialization there (2007–2012). He is a member of the Turkish Society of Surgery. He has completed courses in abdominal wall hernia, burn care, microsurgery, thyroid surgery neuromonitorization, oncoplastic and reconstructive breast surgery, and gunshot wounds. He has also attended national and international surgical congresses.

Dr. Arye Blachar is a diagnostic radiologist with expertise in abdominal imaging, hepatic perfusion imaging, CT colonography, and body MR imaging. He focuses on imaging studies of the abdominal and pelvic organs. He has a special interest in diagnosing cancers of the liver, lung, prostate, stomach, adrenal glands, breast, and esophagus, as well as peritoneal mesothelioma.

Dr. Blachar has been recognized as one of the best teachers at Tel Aviv University Sackler School of Medicine. Forbes Israel named him one of the country's top physicians in 2021. His honors include a Certificate of Merit for research, Magna Cum Laude for his work on portal vein thrombosis, and an Editors’ Recognition Award from the European Radiology Journal.

Education

Sep 2009 – Jun 2014      Medical Degree - Doctor of Medicine and Surgery (MD)

                                                University of Malta

Sep 2006 – Jun 2009      Bachelor of Science in Pharmaceutical Sciences (BSc Honours)

                                                University of East Anglia (United Kingdom)

Work Experience and Training

Aug 2021 – Aug 2022   Senior Skin Cancer Fellow

                                               St John’s Institute of Dermatology, Guy’s and St Thomas’ hospitals

                                               King’s College London, UK

Sep 2017 – Sep 2020    Dermatology and Venerology Specialty Trainee

                                               Sheba Medical Centre, Tel-Hashomer

                                               Tel-Aviv, Israel

Sep 2016 – Aug 2017   Senior House Officer in Ortho-Geriatrics

                                               Colchester University Hospital, NHS Foundation trust

Aug 2015 – Aug 2016   Year 2 Doctor

                                               NHS Greater Glasgow and Clyde

                                               Rotations in the following specialties: 

                                               General Medicine, Obstetrics and Gynaecology, Trauma & Orthopaedics

Aug 2014 – Aug 2015   Year 1 Doctor

                                               NHS Greater Glasgow and Clyde

                                               Rotations in the following specialties:

                                               General Medicine, General Surgery (skin cancer clinics and minor ops)

Other activity

• Clinical Tutor: 

1. Demonstrator - skin biopsy course
   St John’s Derm-academy London (June 2022)
2. Lecturer for the topic: Non-melanoma skin cancer for the MSc Dermatology, King’s College London (Aug 2021)
3. Instructor and tutor responsible for the St. George’s, University of London (Cyprus campus) and Tel-Aviv University medical students on rotation at the Dermatology department, Sheba medical centre (Sep 2018 – present) 
    
4. Delivering weekly tutorials to 5th year medical students of the University of Glasgow. Topic:  Skin cancers and melanoma (Jan 2015 – Aug 2016)

• Medical Student – Scholarship: University of Oxford, fully funded Clinical Elective at the department of Plastic Surgery – John Radcliffe University Hospital (Sep – Nov 2013)
  
   
• Medical Student – Elective: International Medical students Association funded elective, Plastic surgery – Ljubljana University Hospital (Sep 2012)
  
   
• Conferences and Courses

May 2022                      British Society of Skin Care in Immunosuppressed Individuals

                                          Update on skin diseases in immunosuppressed - London

Oct 2021                        British society of dermatological surgery course – London 

Sep 2021                        St John’s Academy dermoscopy course - London

Dec 2019                        International nail disorders conference – Tel-Aviv

Sep 2019                        Annual Dermoscopy course – Tel-Aviv

Sep 2018                       27th  EADV congress - Paris

Feb 2016                        Basic Surgical Skills course

                                           Royal College of Surgeons of Edinburgh (RCSEd)

Aug 2015                       Training the Clinical Teacher Diploma 

                                           University College London (UCL)

Sep 2013                        Head and neck flap course - NHS Oxford Deanery

Memberships and Registration

• Cyprus Medical Council
• Dermatology and Venereology specialist register
•  
• General Medical Council, UK
• Full registration 
•  
• European Academy of Dermatology and Venereology (EADV)

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