Page 23 - Best Doctors in the World

Dr. Umit Tuncel is an ENT specialist. He earned his medical degree from Ankara University Faculty of Medicine (1986–1992). He completed his ENT residency at Ankara Numune Training and Research Hospital (1993–1996). He has more than 30 years of ENT experience in Turkey.

He was Head of Clinic at Ankara Keçiören Training and Research Hospital (2005–2008) and at Ankara Oncology Training and Research Hospital (2008–2018, 2022–2024). This totals about 15 years in leadership roles. His practice focuses on head and neck cancers, surgery for snoring and sleep apnea, rhinoplasty, and pediatric ENT. He is currently an ENT specialist at Lokman Hekim Istanbul Hospital (2024–present).

Dr. Nurettin Demirkol is a physician with expertise in hypertension, hyperlipidemia, thyroid diseases, diabetes, and vascular conditions. He also manages the follow-up of chronic diseases. Dr. Demirkol has strong experience in identifying causes and making diagnoses. He provides advanced care in internal medicine.

He completed his undergraduate and specialization training at Istanbul University, Istanbul Faculty of Medicine. He also earned a master’s degree in Health Management from Okan University. Dr. Demirkol has worked at Hisar Intercontinental Hospital, Kozyatağı Central Hospital, and Istanbul Faculty of Medicine. He has made important contributions to patient care and chronic disease management at these institutions.

Dr. Orhan Shencan is a medical oncology specialist. He graduated from Hacettepe University Faculty of Medicine in 1988. He completed his Internal Medicine residency at Ankara Training Hospital between 1990 and 1994. He finished his Medical Oncology training at Ankara University between 1997 and 1999. He became an Associate Professor in Medical Oncology in 2009.

He has held Internal Medicine and Medical Oncology posts at İnönü University, Ankara Training Hospital, and Ankara University Faculty of Medicine. He also worked at Ankara Etlik Specialty Hospital, Private Lokman Hekim Hospital, Acıbadem Maslak Hospital, and Fatih University (Associate Professor, 2012–2016). He later worked at Sante Oncology Center and Medical Park Gebze Hospital.

He practiced at King Hamad University Hospital, Bahrain Oncology Center, from 2017 to 2023. In 2024 he worked at Acıbadem Bodrum Hospital. He currently practices at Avicenna Ataşehir Hospital (2024–) and Lokman Hekim Istanbul Hospital (2025–).

Dr. Alihan Gurkan is a gastrointestinal surgeon with over 25 years of experience. He specializes in bariatric and advanced gastrointestinal procedures. For more than ten years, he led the Department of General Surgery. He is known for his focus on patient safety and his commitment to international standards.

Dr. Gurkan is a member of several professional organizations, such as the American Society of Transplant Surgeons and the Turkish Society of Surgery. He completed advanced fellowships in cardiovascular and multi-organ transplantation at leading US institutions. His practice is known for high success rates and the use of modern surgical techniques.

Dr. Suleyman Aliyazicioglu is a plastic, reconstructive, and aesthetic surgery specialist at Memorial Göztepe Hospital (2025–present). He previously worked at Kırklareli Training and Research Hospital (2022–2025).

He earned his MD from the Gazi University Faculty of Medicine (2008–2014). He completed specialty training in plastic, reconstructive, and aesthetic surgery at Pamukkale University (2022). He is a member of the Istanbul Medical Chamber.

His professional development includes an Erasmus exchange at the Medical University of Lublin (2013). He attended the Plastic, Reconstructive and Aesthetic Surgery Residents’ School (2018) and Eurasian Non-Surgical Days (2019). He also took part in the National Congress of Plastic, Reconstructive and Aesthetic Surgery (2022, 2023).

Prof. Dr. Levent Kılıçkan graduated from Trakya University Faculty of Medicine in 1989. He completed his residency at Istanbul Taksim Hospital in 1994. He became an associate professor at Kocaeli University Medical Hospital in 2001. In 2006, he was promoted to full professor at Kocaeli University Faculty of Medicine.

Dr. Kılıçkan has attended many national and international medical events. His main areas of interest are intensive care, regional anesthesia, organ transplantation, and cardiovascular anesthesia.

Dr. Fatma Kural Aydın is an internal medicine specialist at Hisar Hospital Intercontinental. She focuses on the assessment, diagnosis, treatment, and follow-up of internal diseases. She earned her M.D. from Istanbul University Cerrahpaşa School of Medicine (English Education, 1998). She completed her residency at Istanbul University School of Medicine in 2010.

Her main areas of interest are endocrine and metabolic diseases. Dr. Kural Aydın has worked at Andirin State Hospital in Kahramanmaras and Istanbul University Cerrahpaşa Faculty of Medicine. She has extensive clinical experience and is dedicated to improving patient care in her field.

*EXPERIENCE*

2023 - Present, Istanbul/Turkey

MEMORIAL ATAŞEHİR HOSPITAL

Pediatric Neurology Specialist

2022 - 2023, Gaziantep/Turkey

SANKO UNIVERSITY FACULTY OF MEDICINE HOSPITAL
Pediatric Neurology Specialist

2019 - 2020, Gaziantep/Turkey

HASAN KALYONCU UNIVERSITY

Pediatric Neurology Specialist

2017 - 2019, Şanlıurfa/Turkey

ŞANLIURFA TRAINING AND RESEARCH HOSPITAL

Pediatric Neurology Specialist (Compulsory Service)

*EDUCATION*

2017, Venice/Italy

San Servolo University Summer School

2014 - 2017, Kayseri/Turkey

ERCİYES UNIVERSITY FACULTY OF MEDICINE

Pediatric Neurology Fellowship Training

2008 - 2013, Istanbul/Turkey

BAKIRKÖY WOMEN'S AND CHILDREN'S DISEASES TRAINING AND RESEARCH HOSPITAL

Pediatric Medicine Residency Training

2001 - 2007, Istanbul/Turkey

CERRAHPAŞA FACULTY OF MEDICINE
Medical Doctor Education

Endocrinologist

Dr. Erol Bozbora is an Ear, Nose and Throat (ENT) specialist at Memorial Bahçelievler Hospital. He earned his medical degree at Istanbul University Faculty of Medicine (2009–2015). He completed his ENT residency there (2016–2022).

His clinical work includes ENT practice at Aktif International Hospital Bahçelievler (2024–2025). He completed compulsory service at Iğdır Dr. Nevruz Erez State Hospital (2022–2024). He completed a clinical internship at HNO-Zentrum Simmering in Vienna (2023). Earlier, he completed compulsory service at Beyoğlu Community Health Center (2015–2016). He also completed an internship at the World Health Organization in Switzerland (2013).

Dr. Safak Olgan is a specialist in obstetrics and gynecology. He has expertise in in vitro fertilization (IVF) and reproductive medicine. His research focuses on endometrial compaction, the effects of obesity on IVF outcomes, and new uterine manipulation techniques for laparoscopic hysterectomy.

In 2010, Dr. Olgan received the 'Andre Van Assche Kuleuven' best study award from EBCOG. He represents Turkey in the European Network of Trainees in Obstetrics and Gynecology (ENTOG). This role highlights his dedication to reproductive health and leadership in the field.

2022 - Present, Istanbul/Türkiye

MEMORIAL BAHCELIEVLER HOSPITAL

Pediatric Neurology Specialist

2021 - 2022, Istanbul/Türkiye

BEZMIALEM FOUNDATION UNIVERSITY

Pediatric Neurology Specialist

2020 - 2021, Istanbul/Türkiye

ISTANBUL BAGCILAR EDUCATION AND RESEARCH HOSPITAL

Pediatric Neurology Specialist (Compulsory Service)

2019 - 2020, Izmir/Türkiye

IZMIR BEHÇET UZ CHILD HEALTH DISEASES AND SURGERY TRAINING AND RESEARCH HOSPITAL

Pediatric Neurology Specialist (Compulsory Service)

2013 - 2015, Istanbul/Türkiye

ISTANBUL GAZİOSMANPAŞA TAKSİM FIRST AID TRAINING RESEARCH HOSPITAL

Pediatric Specialist (Compulsory Service)