Best Doctors in the World — Page 22

Dr. Ilknur Erenler Bayraktar is a general surgeon at Memorial Şişli Hospital in Istanbul. She focuses on colorectal surgery, gastrointestinal oncology, and laparoscopic techniques. Dr. Bayraktar earned her medical degree and residency at Istanbul University Cerrahpaşa. She practiced at the Cleveland Clinic Digestive Disease Institute in the USA.

• Holds European Board of Coloproctology (EBSQ-C) specialist certification.
• Completed clinical training at Klinikum rechts der Isar in Germany.
• Specializes in minimally invasive and robotic surgical methods.
• Member of the European Society of Coloproctology and the European Surgical Society of Oncology.

2021 - Currently MEMORIAL ŞİŞLİ HOSPITAL

Associate Professor of General Surgery / Istanbul

2018 - 2021 ISTANBUL FLORENCE NIGHTINGALE HOSPITAL,

SCIENCE UNIVERSITY

Associate Professor of General Surgery / Istanbul

2014 - 2018 ACIBADEM UNIVERSITY ATAKENT HOSPITAL

Assistant Professor / Istanbul

2012 - 2013 TDV 29 MAY HOSPITAL

General Surgery Specialist / Istanbul

Dr. Tumay Ipekci is a urology specialist and professor at Memorial Şişli Hospital in Istanbul. He has authored over 60 articles in peer-reviewed medical journals. Dr. Ipekci serves on the editorial boards of Urology Research and Practice and the Mediterranean Medical Journal. He is a faculty member at Bahçeşehir University. His practice is based at a JCI-accredited hospital known for organ transplantation and robotic surgery.

• Member of the European Association of Urology (EAU) since 2006.
• Presented 36 scientific papers at national and international medical congresses.
• Active member of the Endourology Society and the Turkish Urological Association.
• Former associate professor at Başkent University Department of Urology.

Dr. Nihal Durmus Kocaaslan is an Associate Professor of Plastic, Reconstructive, and Aesthetic Surgery at Marmara University. Kocaaslan holds TPRECD and EBOPRAS certifications (2013). Kocaaslan became a Fellow of the American College of Surgeons (FACS) in 2021. Kocaaslan has served as a Forensic Expert at the Ministry of Justice since 2019. Kocaaslan earned a PhD in Forensic Medicine in 2020.

Expertise includes orthognathic, maxillofacial, and jaw surgery, as well as cleft lip and palate and other congenital anomalies. Kocaaslan also specializes in breast and chest wall reconstruction, chronic wound repair, and aesthetic surgery.

International training includes reconstructive microsurgery at RWTH Aachen. It also includes breast, face, and body aesthetics at clinics in the United States and cleft care at Seattle Children’s. Kocaaslan trained in craniosynostosis at Erasmus University Rotterdam and in maxillofacial and orthognathic surgery at St. George’s Hospital. Kocaaslan is a board member of EPCD and active in wound care and cleft associations. Memberships include ACS, ISAPS, the American Cleft Palate Foundation, and AO Craniofacial.

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. Yavuz Yalcin is a specialist in endocrinology and metabolic diseases at Memorial Sisli Hospital in Istanbul, where he has worked since 2014. He previously served at Memorial Etiler, Private Ordu Medical Park, and Ordu State Hospital. He completed an endocrinology fellowship at Ankara Numune from 2009 to 2012. Before that, he finished an internal medicine residency at SSK Goztepe and earned his medical degree from Akdeniz University.

Academic work includes 8 international and 10 national publications. He has given 10 international and 20 national presentations and attended 39 scientific meetings. He holds the Internal Medicine Board certification (2002), Hemodialysis Responsible Physician certification (2005; renewed 2013), and Occupational Physician certification (1998). He completed thyroid and neck ultrasonography courses in 2012–2013. He is a member of the Society of Internal Medicine, the Metabolic Syndrome Society, and the Turkish Society of Endocrinology and Metabolism.

Dr. Servet Alan is a specialist in Infectious Diseases and Clinical Microbiology. He works at Memorial Ataşehir Hospital (2010–present) and Memorial Şişli Hospital (2000–present). He previously served at Haseki Training and Research Hospital (1997–2012).

Education: MD, Istanbul University (1983–1989). MSc in Pediatric Infectious Diseases (1991–1993). Residency in Infectious Diseases and Clinical Microbiology, Istanbul University (1993–1997). Master’s in Hospital and Healthcare Management, Beykent University (2004–2007).

Professional memberships: Klimik Association; Turkish Society of Microbiology; Association for Hospital Infections and Control. He has participated in many trainings, courses, seminars, and congresses.

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.

2003 - Present, Istanbul/Istanbul/Türkiye

MEMORIAL ANKARA HOSPITAL

Nuclear Medicine Specialist

2003 - 2003, Erzincan/Erzincan/Türkiye

B. ERZINCAN STATE HOSPITAL

Nuclear Medicine Specialist

1994 - 1995, Samsun/Samsun/Türkiye

SAMSUN HAVZA SEYHLER HEALTH CENTER

General Practitioner

Prof. Dr. Erdem Akbal is a Gastroenterology Specialist at Memorial Şişli and Memorial Bahçelievler Hospitals in Istanbul. He previously served at Liv Hospital Ulus, Medicana Ataşehir, Florence Nightingale Hospitals, and Çanakkale Onsekiz Mart University. He became an Associate Professor in 2014 and a Professor in 2019.

He received advanced training in interventional endoscopy. He completed ESD at Jichi Medical University in Japan. He trained in POEM/ESD and gastrointestinal motility at Amsterdam Medical Center. He trained in EUS at Johns Hopkins Hospital in the USA. He continues to attend ESG, ERCP, EUS, ESD, and POEM courses and congresses.

He has authored more than 100 international indexed publications. His presentations have won awards. He is a member of the Turkish Society of Gastroenterology, the Gastrointestinal Endoscopy Society, the Hepatobiliary and Pancreatology Society, the Liver Diseases Association, the IBD Association, and the Turkish Liver Research Association.

Dr. Serkan Kitis is a neurosurgeon at Memorial Şişli Hospital in Istanbul. He specializes in treating brain tumors, cerebral aneurysms, and spinal conditions like herniated disks. Dr. Kitis has published over 25 articles in international peer-reviewed journals. He works at a JCI-accredited hospital known for its success in complex surgical cases.

• Expertise includes arteriovenous malformations, pituitary adenomas, and Moyamoya disease.
• Completed specialized microsurgical anatomy training at the Prof. Rhoton Lab.
• Authored 12 chapters in national and international medical textbooks.
• Presented over 60 scientific papers at national and international medical meetings.

Dr. Mahir Mahirogullari is an orthopedic surgeon at Memorial Şişli Hospital in Istanbul. He completed a fellowship in orthopedics and traumatology at Wake Forest University in the USA. Dr. Mahirogullari specializes in treating complex musculoskeletal injuries and joint conditions like arthrosis.

• Earned the Turkish Association of Orthopedics and Traumatology Best Verbal Declaration Award.
• Winner of multiple professional honors, including the Derviş Manizade and Altındağ Branch prizes.
• Member of the International Society of Arthroscopy Knee Surgery and Orthopaedic Sport Medicine.
• Works at Memorial Şişli, the first hospital in Turkey to receive JCI accreditation.

Dr. Elif Erol is a gynecologist and obstetrician at Hisar Hospital Intercontinental in Istanbul. She specializes in pregnancy monitoring and high-risk pregnancy management. Dr. Erol performs normal, painless, and water deliveries. She works at a JCI-accredited facility, meeting the highest US surgical safety standards.

• Performs closed laparoscopic and hysteroscopic surgeries for fibroids and cysts.
• Treats polycystic ovary syndrome and complex hormonal disorders.
• Provides genital aesthetic and reconstructive surgeries.
• Manages menopause through bioequivalent hormone replacement therapies.

Dr. Teoman Akcay is a gastroenterologist at Memorial Ataşehir Hospital in Istanbul. He specializes in digestive disorders, endoscopy, and liver research. Dr. Akcay completed his specialty training at Dokuz Eylül University. He treats patients at a clinic in the JCI-accredited Memorial Healthcare Group.

• Member of the Turkish Gastroenterology Association.
• Active member of the Turkish Liver Research Association.
• Sits on the Turkish Endoscopy Association board.
• Published numerous scientific articles in national and international medical journals.

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. 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. Seref Komurcu is a medical oncologist at Anadolu Medical Center in Istanbul. He specializes in treating breast, lung, colorectal, and solid cancers. Dr. Komurcu holds both ECFMG and ESMO certifications. He previously served as a professor at Gülhane Military Medical Academy.

• Published over 110 scientific papers on cancer management.
• Provides immunotherapy, targeted therapy, and chemotherapy treatments.
• Member of the American Society of Clinical Oncology.
• Works at a clinic affiliated with Johns Hopkins Medicine.