Page 4 - Best diagnosticians: TOP 340 doctors

Education and Specialization

• Hacettepe University Faculty of Medicine – English Medical Education
• Akdeniz University Faculty of Medicine – Internal Medicine – Residency
• Akdeniz University Hospital – Nephrology – Subspecialty Training
• San Bortolo Hospital, Vicenza, Italy – Critical Care Nephrology and Transplantation – Fellowship
• Hacettepe University Faculty of Medicine – Associate Professorship

Professional Memberships

1. Turkish Society of Nephrology (TND)
2. European Society of Nephrology (ERA-EDTA)
3. Middle East Society of Organ Transplantation (MESOT)
4. International Society of Nephrology (ISN)

2023 - Present, Antalya/Türkiye

MEMORIAL ANTALYA HOSPITAL

Urology Specialist

2020 - 2022, Antalya/Türkiye

MEDSTAR TOPCULAR HOSPITAL

Urology Specialist

2016 - 2020, Antalya/Türkiye

MEDICAL PARK ANTALYA HOSPITAL

Urology Specialist

2007 - 2016, Antalya/Türkiye

LIFE HOSPITAL

Urology Specialist

1991 - 2006, Antalya/Türkiye

AKDENİZ UNIVERSITY FACULTY OF MEDICINE

Urology Specialist

Dr. Kazibe Demir is an Obstetrics and Gynecology Specialist at Memorial Göztepe Hospital (2025–). She previously worked at Kadıköy Medicana Hospital (2022–2025) and Dr. Lütfi Kırdar Kartal Training and Research Hospital (2018–2022). She focuses on urogynecology.

Education: MD, Ankara University (2010). Obstetrics and Gynecology residency, Ankara University Faculty of Medicine (2016). PhD program in Urogynecology, Ankara University – University of Health Sciences (2020–2025).

Professional memberships: Turkish Urogynecology and Pelvic Rehabilitation Society; International Urogynecological Association (IUGA). Continuing education: IUGA 2025 (Barcelona). EUGA 2025 (Varese). Turkish Urogynecology and Pelvic Rehabilitation Society Meeting 2024 (Istanbul).

Dr. Rahsan Adviye is a Neurology Specialist at Memorial Göztepe Hospital (2025–present). She has over 20 years of specialist practice in Istanbul. She previously worked at Fatih Medical Park (2004–2008) and Hisar Hospital (2009–2010). From 2010 to 2025, she served as a Neurology Specialist and instructor at the University of Health Sciences, Kartal Dr. Lütfi Kirdar City Hospital. This post included 15 years of academic teaching.

She completed her Neurology residency at Istanbul University Cerrahpaşa Faculty of Medicine (1999–2004). She earned her M.D. there in the English-language program (1991–1998). She is a member of the Turkish Neurology Society, the Istanbul Medical Chamber, and the EEG-EMG Clinical Neurophysiology Society. She attended the Master’s Program in Clinical Neurophysiology at Istanbul University. She has also taken part in many national and international scientific meetings.

Education:

• Degree: Faculty of Medicine, Trakya University, 2009
• Medical Specialty: Internal Medicine, Bakırköy Dr. Sadi Konuk Training and Research Hospital, 2010-2014
• Specialist Doctor: Internal Medicine, Kanuni Sultan Süleyman Training and Research Hospital, 2014-2019
• Specialist Doctor: Internal Medicine, Turkish Hospital Internal Medicine Clinic, Qatar, 2019-2020
• Specialist Doctor: Internal Medicine, Istanbul Medipol University Hospital Mega Hospital Internal Medicine Department, 2020-2024
• Associate Professor Doctor: Internal Medicine, Istanbul Medipol University Medipol Acıbadem Regional Hospital, 2024-Present.

Roles in Projects:

Sub investigator (Assistant Researcher) in the SOUL Study: Cardiovascular Outcome Research of Semaglutide in Type 2 Diabetic Patients, approved by the Turkish Medicines and Medical Devices Agency on May 22, 2019.

Sub investigator (Assistant Researcher) in the international study “SCALE™ Insulin”: Efficacy and Safety of Liraglutide 3.0 mg in Overweight or Obese Patients with Type 2 Diabetes Treated with Basal Insulin (Study Code: NN8022-4272), conducted by Novo Nordisk A.Ş.

Subinvestigator (Assistant Researcher) in the international study NN5401-4266 StepByStep Intensification conducted by Novo Nordisk.

Assistant Researcher in the study "A Research Study to Compare Semaglutide to Insulin Aspart, When Taken Together With Metformin and Insulin Glargine, in People With Type 2 Diabetes (SUSTAIN 11)" (2019-2020).

Assistant Researcher in the PIONEER 1 study: Randomized Clinical Trial of the Efficacy and Safety of Oral Semaglutide Monotherapy in Comparison With Placebo in Patients With Type 2 Diabetes.

Dr. Sumeyre Seda Ertekin is a general surgeon and surgical oncologist at Memorial Göztepe Hospital (2025–present). She previously worked at Academic Hospital (1999–2025), Marmara University Hospital (1991–2010), Gülhane Military Medical Academy Haydarpaşa (1997–1998), and Haukeland University Hospital in Bergen, Norway (2000–2008).

She holds UEMS European Board of Surgery certification in General Surgery (2012) and a subspecialty in Breast Surgery (2012). She completed Ministry of Health subspecialty training in Surgical Oncology (2012). She finished her General Surgery residency at Marmara University (1991–1996).

Memberships and roles: Founding Member, Breast Surgery Association. Country Coordinator, OPBS. Member, EORTC‑BCG, BRESO, IBUS, SENATURK, and the Istanbul Breast Diseases Society. Member, Global Technical Oversight Group (THET–ABS). Honorary Member of the Bulgarian Surgical Society, the Romanian Society of Breast Surgery and Oncology, and ABSI (India).

Dr. Bulen Can is an endocrinology specialist at Memorial Göztepe Hospital (2025–present). He previously worked at Acıbadem Ataşehir (2024–2025). From 2017 to 2024, he was a faculty member in the Division of Endocrinology at Istanbul Medeniyet University. He also practiced at Ankara Numune, Kastamonu Dr. M. İslamoğlu, and Ümraniye Training and Research Hospitals. He has been an endocrinology specialist since 2013.

He completed subspecialty training in Endocrinology and Metabolic Diseases at Istanbul University, Istanbul Faculty of Medicine (2009–2013). Before that, he finished his Internal Medicine residency at Bezm‑i Âlem Vakıf Gureba (2003–2009). He received his M.D. from the Istanbul Faculty of Medicine. He is a member of TEMD, TİHUD, TTB, and the Istanbul Medical Chamber. He attended the 46th TEMD Congress (2025), Aydın Endocrine Days (2022), and Clinical Research Training (2017).

• AREAS OF INTEREST
• Spine surgery
• Scoliosis
• Kyphosis
• Childhood spinal diseases
• Degenerative spine diseases
• Lumbar cervical disc herniation
• Knee hip joint disorders
• Orthopedic trauma surgery

• Education and Specialization
• 2010 - Cerrahpasa Faculty of Medicine - Medical Education
• 2016 - Medeniyet University Goztepe Training and Research Hospital - Specialization

• Experience
• 2016 - 2022 - Sisli Hamidiye Etfal Training and Research Hospital
• 2015 -2016 - Chicago Loyola University, Illinois, USA

• Courses and Certificates
• 13.12.2019-14.12.2019 Turkish Spine Society Eurospine Accredited Education Modules
• 08.11.2019-10.11.2019 Turkish Spine Society Eurospine Accredited Education Modules
• 31.08.2015-04.09.2015 Basic Microsurgery Course, MICROSURGERY EDUCATION-RESEARCH LABORATORY
• AO Trauma Course-Basic Principles of Fracture Management
• 07.06.2014-10.06.2014 Fracture Management, Kodi Kojima Chairperson AOTrauma Education Commission
• 01.03.2013-02.03.2013 Instrumentation in Arthroscopic Surgery

• Professional Memberships
• Turkish Orthopedics and Traumatology Association (TOTBİD)
• Turkish Medical Association - Istanbul Medical Chamber

Dr. Cemal Aydin specializes in interventional radiology. He earned his medical degree from the Marmara University Faculty of Medicine (2007–2013). In 2014, he worked as a general practitioner at the Kars Provincial Health Directorate. He then completed his residency in interventional radiology at Marmara University Hospital (2014–2020). He served as Head Physician, Radiology, at Yüksekova State Hospital (2020–2021). From 2021 to 2023, he practiced interventional radiology at Koç University Hospital.

He presented at the 37th and 38th National Radiology Congress. In 2016, he reported on lobar distribution of liver metastases in primary pancreatic adenocarcinoma. In 2017, he compared procedure times and complication rates for Trucut biopsy versus FNAB in lung biopsies with risk factors. He also studied diffusion‑weighted MRI to distinguish CPA meningioma and vestibular schwannoma.

Professor Markus Dukes is a specialist in diagnostic radiology and minimally invasive therapy.

Awards

• Gold Medal of Honorary Professor of Osaka Medical University (Japan).
• Honorary member of DeGIR (German Society for Interventional Radiology and Minimally Invasive Therapy).

Education and professional experience

• 1982-1988 - study of human medicine at the Johannes-Gutenberg University in Mainz.
• 1988 - approval and medical license.
• 1988-1989 - Medical officer of the Bundeswehr.
• 1990 - Candidate of Medical Sciences in the field of radiology, subject: “Investigation of the influence of dilation speed on its success, as well as on damage to the vessel walls during balloon expansion”, at the Johannes-Gutenberg University in Mainz.
• 1990-1996 - Resident in the Department of Radiology at the Ruprecht-Karls University.
• 1996 - Senior physician in the Department of Radiodiagnostics at the Ruprecht-Karls University of Heidelberg.
• 1998 - Doctorate in Diagnostic Radiology, topic: "Direct comparison of imaging methods for gastric carcinoma: the importance of optimized examination methods in clinical practice and first experience with magnetic resonance imaging."
• 2000 - Deputy Head of the Department of Radiology, Department of Radiodiagnostics at the Ruprecht-Karls University of Heidelberg.
• 2000-2002 - Head of the Image Processing Center at the Orthopedic Clinic of the University of Heidelberg.
• 2002-2003 - Head of the Department of Radiology, Surgical Clinic, Department of Radiology at the Ruprecht-Karls University of Heidelberg.
• 2003 - Chief Physician of the Central Institute of Radiology and Neuroradiology at the Nordwest Clinic in Frankfurt am Main.
• 2006 - Associate Professor in the Department of Radiology at the University of Heidelberg.

Scientific activity

Marcus Dukes is one of the first physicians to perform minimally invasive microwave ablation of liver and lung tumors under CT guidance.

Clinical activities

The professor heads the first and only MRI-guided FUS ablation center in the Rhine-Main region. In most cases, the procedure allows avoiding surgical intervention. Patients of the center have access to ablation for prostate cancer, bone and liver metastases, benign tumors, and treatment of uterine fibroids without surgery.

Membership in organizations

• DRG (German Society of Radiologists).
• DeGIR (German Society for Interventional Radiology and Minimally Invasive Therapy).
• RSNA (Radiological Society of North America).
• ESGAR (European Society of Gastrointestinal and Abdominal Radiology).
• CIRSE (Cardiovascular and Interventional Radiology Society of Europe).
• ECR (European Congress of Radiology).
• EUFUS (European FUS Society).
• MEDICA (German Society for Interdisciplinary Medicine).

Dr. Mustafa Aydın is an Internal Medicine specialist. He graduated from Gazi University Faculty of Medicine in 2009. He provides evidence-based care for adults, including diagnosis and treatment. He communicates in English.

His clinical focus includes chronic disease management, such as diabetes, hypertension, high cholesterol, and thyroid disorders. He treats gastrointestinal problems, including reflux, gastritis, ulcers, and liver diseases, and respiratory diseases like asthma and COPD. He manages infectious diseases. He provides preventive care with routine screenings, risk assessments, and personalized health plans.

Education & Expertise

1995 to 2001 | Ege University Faculty of Medicine – Medical Education

2001 to 2006 | Dokuz Eylül University Faculty of Medicine – Internal Medicine Specialization

2008 to 2011 | Göztepe Training and Research Hospital – Gastroenterology Subspecialty

2014 | Ümraniye Training and Research Hospital – Associate Professor of Gastroenterology

2021 | University of Health Sciences – Professor

Professional Experience

2007 | Nusaybin State Hospital – Internal Medicine Specialist (Civil Service Obligation)

2011 to 2014 | Ümraniye Training and Research Hospital – Gastroenterology Specialist

2014 to 2017 | Ümraniye Training and Research Hospital – Associate Professor of Gastroenterology

2017 to 2021 | Health Sciences University – Associate Professor of Gastroenterology

2015 to 2021 | Ümraniye Training and Research Hospital Gastroenterology Clinic – Clinic Chief

2021 to 2022 | University of Health Sciences – Professor of Internal Medicine and Gastroenterology

2015 to 2022 | Genomic Laboratory (GLAB) Coordinator, Istanbul Provincial Health Directorate

2014 to 2021 | Northern Clinics of Istanbul Journal (indexed in WoS and PubMed) – Founding Editor

2021 to Present | Turkish Liver Research Association – Board Member

2022 to Present | Hepatology Bulletin Journal – Editor

2019 to Present | Hepatology Forum Magazine – Editor

2016 to Present | World Journal of Hepatology – Editor

International Experience

1999 | Trainee Doctor, Regional Infectious Diseases Unit, Western General Hospital, Edinburgh, UK

2000 | Trainee Doctor, Cardiology Unit, North Manchester General Hospital, Manchester, UK

2005 | Assistant Doctor, Regional Infectious Diseases Unit, Western General Hospital, Edinburgh, UK

Professional Memberships

Turkish Gastroenterology Association

Turkish Liver Research Association

EASL – European Association for the Study of Liver

APASL – Asian Pacific Association for the Study of Liver

AAAS – American Association for the Advancement of Science

Awards & Recognitions

2013 | Liver Fibrosis Pathways in Chronic Hepatitis B: A Comparative Proteomic Study – Gilead Fellowship Award

2014 | Liver Fibrosis Pathways in Chronic Hepatitis B: A Comparative Proteomic Study – Viral Hepatitis Fight Association Project Support Award

2014 | The Relationship between Spontaneous Seroconversion and Toll-Like Receptor Gene Polymorphism in Hepatitis B Infection – Turkish Gastroenterology Association, Best Poster Second Prize

2015 | Research on Damage Pathways in Liver Tissue in Chronic Hepatitis B: A Comparative Proteomic Study – Turkish Gastroenterology Association, Best Oral Presentation Third Prize

2016 | Investigations of the EGF and Its Receptor EGFR Gene Variants in Ulcerative Colitis – XV Euroasian Congress of Gastroenterology and Surgery, Best Oral Presentation Third Prize

Dr. Ahmet Ekmekci is a cardiology specialist at Memorial Göztepe Hospital in Istanbul, since 2025. He earned the title of Associate Professor of Cardiology (Doçent) in 2014.

He served as Chief Assistant in Cardiology at Dr. Siyami Ersek Training and Research Hospital in 2010. He completed his cardiology residency at the same hospital in 2009. He finished his internal medicine residency at the Istanbul Faculty of Medicine from 2002 to 2007. He received his MD from Istanbul University, Istanbul Faculty of Medicine, in 2002.

He is a member of the Turkish Society of Cardiology, the European Society of Cardiology, and the European Heart Failure Association (Gold Member). He is also a member of the Istanbul Internal Medicine Association, the Stem Cell and Cellular Therapies Association, the Istanbul Medical Chamber, and the Turkish Medical Association. He served on the Board of the Turkish Society of Cardiology Heart Failure Working Group in 2016.

Education

Doctor of Medicine (M.D.) degree from Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 2022

Certifications

Certification of Anti-aging and Regenerative Medicine from The American Board of Antiaging and Regenerative Medicine (ABAARM)

Certification of Nutritional Wellness from The American

Naturopathic Certification Board (ANCB)

Clinical Focus

General disease diagnosis and treatment, as well as wellness care

Languages spoken: Thai and English

Dr. Hidayet Demir is a Cardiovascular Surgery Specialist at Memorial Göztepe Hospital (2025–). He previously served as an Assistant Professor at Okan University Hospital (2021–2025). He was also a specialist at Ağrı I. Ç. University Training and Research Hospital (2019–2021). Earlier, he worked at City Health Group as Medical Director and ECMO Specialist (2015–2018). He later served as CEO (2018–2025).

Education: MD, Istanbul University Cerrahpaşa (2007–2013). Cardiovascular Surgery residency, SBÜ Kartal Koşuyolu (2013–2019). Beating‑Heart Coronary Bypass observer, Royal Brompton & Harefield Hospital (2018).

Memberships: TKDCD, UVECD, Turkish Medical Association, ESVS, EACTS. Courses: MIRC 2017 (minimally invasive/robotic). UVECD & EVC 2017 Venous Workshop. European Vascular Course 2017: Open Abdominal Aortic Aneurysm Treatment. TKDCD advanced aortic surgery. ESVS aortic arch techniques.

Dr. Basak Sargin is an obstetrics and gynecology (OB/GYN) specialist at Memorial Göztepe Hospital. She has worked at Medipol Mega University Hospital (IVF and Reproductive Health Center), Medipol Acıbadem Region, Memorial Ataşehir Hospital, and Kars Harakani State Hospital.

Accreditations: FMAS and DMAS, World Laparoscopy Hospital (2023). ART training, American Hospital (07/2024–01/2025). Fellowships: Minimally Invasive and Advanced Gynecologic Surgery, Pius University, Oldenburg (07/2025); World Laparoscopy Hospital (05/2023). Additional training in robotic surgery, hysteroscopy, vNOTES, embryo transfer simulation, and laser/magnetic stimulation.

Education: MD, Hacettepe University. OB/GYN residency, Ankara (2016–2021). PhD candidate in Biomedical Engineering, Koç University (since 2023). Memberships: SRGS, International Society of Gynecology and Obstetrics, ESGE, WALS, and Istanbul Medical Chamber.

Dr. Isik Okuyan is an obstetrics and gynecology specialist at Memorial Göztepe Hospital in Istanbul (2025–present). He previously worked at Şanlıurfa Training and Research Hospital (2023–2025). He completed his OB/GYN residency at SB University Istanbul Training and Research Hospital (2019–2023). He earned his MD from Mersin University (2011–2017).

His credentials include GESEA Level 1 in Gynecological Endoscopy (Marseille, 2024). He presented a video and a poster at the 33rd ESGE Congress (2024). He is a member of the Turkish Medical Association, the Turkish Society of Gynecology and Obstetrics, and ESGE. He took part in meetings from 2022 to 2025, including ISON and national gynecology congresses.

Dr. Berrak Beyoglu Oruc is a specialist in obstetrics, gynecology, and IVF at Memorial Göztepe Hospital (2025–). She previously worked at Bahçeşehir University Medical Park Göztepe Hospital and Ağrı Training and Research Hospital. She also served as a research physician in gynecologic oncology at Bologna University S. Orsola (2022).

Accreditations and key training include: Certified ART Clinical Training, American Hospital (2025); GESEA MIGS Level 1 – European Certified Minimal Invasive Gynaecological Surgeon (2024). She also completed the Harvard Women’s Health and Menopause Course (2025), ESGO ORSI Robotic Surgery (2022), ESGO Masterclass (2022), and TMFTP Second Trimester Ultrasound (2024).

Awards: First prize, oral presentation—Transperineal Ultrasonography in Predicting Operative Delivery (13th Maternal–Fetal Medicine and Perinatology Congress, 2023). Third prize—Aortic Dissections (2016). Memberships: ISUOG, ESGE, MIJID, TJOD.

Dr. Haluk Caglar Karakaya is a specialist in cardiovascular surgery at Memorial Göztepe Hospital in Istanbul (2025–). He previously worked as a specialist at the University of Health Sciences Sancaktepe Şehit Prof. Dr. İlhan Varank Training and Research Hospital (2022–2025). He completed residency training at the University of Health Sciences Dr. Siyami Ersek Thoracic and Cardiovascular Surgery Training and Research Hospital and at Ankara University. He earned his MD from Hacettepe University (English program).

Professional memberships: European Society for Cardiothoracic Surgery (EACTS), European Society for Vascular Surgery (ESVS), Turkish Society of Cardiovascular Surgery, National Society of Vascular and Endovascular Surgery.

Continuing education: 27th European Vascular Course (2024); Cardiac Memorial Robotic/Minimally Invasive Cardiac Surgery Summit (2024); 18th Turkish Cardiovascular Surgery Congress (2024); 24th ASVS Congress (2023); TKDCD Endovascular Course (2023); “Grey Areas in Vascular Surgery” Symposium (2023); Basic and Advanced Doppler Ultrasonography Course (2023).

2002 – 2008 – Siriraj Medical School, Mahidol University

2008 – 2013 – Department of Internal Medicine, Rajavithi Hospital

2013 – 2015 – Department of Cardiology, Internal Medicine Rajavithi Hospital

2019 – 2020 – Cardiology Intervention, Department of Cardiology, Internal Medicine Rajavithi Hospital

Languages: English and Thai