Page 13 - Best Doctors in the World

Prof. Şeref Kömürcü is an ECFMG and ESMO-certified medical and breast oncologist with over 20 years of experience. He specializes in solid cancer, breast cancer, colorectal and lung cancer treatment and has held teaching and scientific positions throughout his career. He is a member of several professional organizations.

Assoc. Prof. Dr. Güner ÇAKMAK is a highly skilled and experienced specialist in General Surgery, currently practicing at Lokman Hekim University İstanbul Hospital. With a medical degree earned from Haydarpaşa Numune Hospital in 1997, he has built an extensive career, focusing on various advanced surgical techniques. His areas of expertise include laparoscopic surgery, bariatric and metabolic surgery, hepatopancreatobiliary surgery, and various types of laparoscopic gastrointestinal surgeries, including those for hernias, reflux, and esophageal issues. He is also highly experienced in hemorrhoid surgery and surgeries for anal fistulas and fissures.

Throughout his career, Dr. Çakmak has made significant contributions to medical literature, having published over 43 articles in international peer-reviewed journals and 16 in national journals. He is also the author of 20 technical notes, case reports, and research articles. His commitment to advancing medical knowledge is reflected in the numerous awards he has received, with a total of 9 prizes recognizing his exceptional work in surgery. Fluent in Turkish, English, and German, Dr. Çakmak offers comprehensive care to his patients, employing the latest minimally invasive techniques to ensure the best outcomes.

At Lokman Hekim University İstanbul Hospital, he continues to provide expert care, focusing on complex surgeries, with an emphasis on laparoscopic and metabolic procedures. His work is marked by a dedication to patient well-being and continuous professional development, making him a trusted choice for individuals seeking high-quality surgical care in Turkey.

Prof. Dr. Onur YAMAN was born in Germany in 1976. In 2001, he graduated from Ege University Faculty of Medicine. In 2009, he received his specialization in Neurosurgery from Celal Bayar University. Between 2009-2011, he worked as a Neurosurgeon at Muş State Hospital and Rize Training and Research Hospital. Between 2011-2013, he worked at Tepecik Training and Research Hospital. Between 2013-2014, he worked at Ankara Spine Center. Between 2014-2018, he worked at Koç University Hospital Spine Center and received the title of associate professor in 2015. Between 2018-2024, he worked at Memorial Hospitals Group's Spine Center and was awarded the title of professor in 2021. Between 2023-2024, he worked as an instructor at Arel University Faculty of Medicine. Since 2024, he has been working at NPISTANBUL Brain Hospital and at the same time he is an instructor at Üsküdar University Faculty of Medicine.

Prof. Dr. Onur YAMAN is the president of the Middle East Spine Society since 2022. In addition, he is active in many professional associations.

He has made numerous oral presentations at international and national congresses and has edited books and book chapters published in many international and national publishing houses.

Professor of Urology at Memorial Bahçelievler Hospital. Head of Urology at Arel University. Focus on urologic oncology (kidney, prostate, bladder), BPH, and kidney stones/endourology.

Performed 100 robotic cancer surgeries, 3,000 laparoscopic surgeries (including oncologic), and 50 HoLEP procedures. Experienced in ureterorenoscopy, percutaneous nephrolithotomy, and flexible ureteroscopy.

Author of 47 articles (27 international, 20 national) and 59 abstracts (16 international). Wrote 4 book chapters and has 310 citations. Certified in laparoscopic surgery (2008) and Da Vinci robotic surgery (2012, France). Instructor in laparoscopy, robotics, and PCNL courses since 2010. Member of the Endourology Society; Turkish Urology and Andrology Associations; EAU; and AUA. Research fellow at Weill Cornell in 2013 and observer at Beth Israel in the USA.

Prof. Dr. Burak Onan is a cardiovascular surgeon with expertise in mitral valve diseases, coronary artery bypass surgery, heart valve repair, and aortic aneurysm treatment. He has published 150 scientific articles. He has also presented his work at many national and international conferences.

Dr. Onan has held key positions in leading hospitals and academic boards. He also serves on ethics committees. He is a member of respected organizations, including the Turkish Society of Thoracic and Cardiovascular Surgery and the EACTS Robotic Cardiac Surgery Group. His work shows a strong commitment to innovation and high standards in cardiac care.

Dr. Mesut Bayraktaroglu is a skilled pulmonologist at Private Memorial Bahçelievler Hospital in Istanbul. He has also worked at Istanbul Aydin University Florya Medical Park Hospital and Yedikule Chest Diseases Hospital. In these roles, he gained strong clinical experience.

Dr. Bayraktaroglu completed his pulmonology residency at Yedikule Chest Diseases Training and Research Hospital. He earned his medical degree from Marmara University Faculty of Medicine. He has held key positions in several major hospitals in Istanbul, focusing on chest diseases and respiratory care.

Prof. Haluk Duman is an expert plastic surgeon based in Istanbul, Turkey with over 35 years of experience. He specializes in plastic surgery after cancer, burns, and skin tumors, as well as hand and maxillofacial surgery. He has a general medical degree from Istanbul University Medical Faculty and specialty in plastic and reconstructive surgery from Ankara GATA Medical School, and a fellowship from The University of Texas MD Anderson Cancer Center. Prof. Duman has published over 60 papers and participated in 100+ conferences. He is a member of various organizations.

Prof. Yaşar Kütükçü is a neurologist with an education from Gülhane Askeri Tıp Akademisi Medical School and University of California San Francisco. He is a member of Turkish Neurology Society, Parkinson’s Disease Society and International Parkinson and Movement Disorders Society and specializes in Neurophysiology (Deep Brain Stimulation) and movement disorders treatment.

Dr. Fevzi Akkan is an experienced eye specialist. He focuses on cataract surgery, refractive error correction, and retinal treatments. He performed Turkey’s first bionic eye surgery. This achievement earned him the TOD Best Surgical Video Award in 2016.

Dr. Akkan is a member of the Turkish Ophthalmology Association, the American Academy of Ophthalmology, and the European Vitreoretinal Society. He graduated from Istanbul School of Medicine in 1997. He completed his ophthalmology training at Istanbul Training and Research Hospital in 2002.

Dr. Suleyman Ayvaz is an Associate Professor in Pediatric Surgery. He has performed many successful pediatric surgical procedures. Dr. Ayvaz is known for his work in minimally invasive techniques. He has published many articles in peer-reviewed journals. He has received several national and international accreditations. Dr. Ayvaz is also dedicated to teaching and mentoring young surgeons.

Prof. Sadi Kerem Okutur is a Turkish medical oncologist with over 20 years of experience. He is currently working at Memorial Bahçelievler Hospital, and has held various positions in the past. He has a degree in general medicine, and a residency in internal medicine and medical oncology. Prof. Okutur has won a research award and authored numerous papers and book chapters. He is a member of various medical societies.

In 2016, she completed her specialty training at Çukurova University Department of Child and Adolescent Psychiatry and Mental Health and Diseases with herthesis on "Intergenerational Effect of Trauma in Children and Adolescents with Anxiety Disorder" and became a Child Psychiatry specialist in 2020. As of August 2024, she continues to work as a Child and Adolescent Psychiatry specialist at NPISTANBUL Brain Hospital.

Areas of Interest:

• Autism Spectrum Disorder (ASD)
• Attention Deficit and Hyperactivity Disorder (ADHD)
• Behavior Disorder
• School Refusal
• Exam Anxiety
• Dyslexia (Learning Disability)
• Family Communication Problems
• Parental Separation
• Childhood Fears
• Developmental Disorders
• Depression in Children
• Bipolar Disorder
• Psychotic Disorder
• Substance Abuse and Treatment in Children and Adolescents
• Eating Disorders
• Anxiety Disorders
• Post Traumatic Stress Disorder (PTSD)
• Obsessive Compulsive Disorder (OCD)
• Tic Disorder
• Psychosomatic Therapies (rTMS, Deep TMS)
• Cognitive Behavioral Therapies

Dr. has worked in various medical institutions from 1998-2017, including Gazi University (2001-2003) and Selcuk University (1998-2001, 2003-2009, 2009-2010).

Professional Summary

Highly skilled and dedicated Periodontologist and Implantologist with over 14 years of experience in diagnosing, treating, and managing periodontal diseases and performing dental implant surgeries. Known for expertise in gingival aesthetics, smile design, and advanced bone augmentation procedures. Committed to delivering exceptional patient care and maintaining high standards of dental health.

Education

Specialty in Periodontology
Erciyes University Faculty of Dentistry, Department of Periodontology
2012 - 2016

Doctor of Dental Surgery (DDS)
Ondokuz Mayıs University Faculty of Dentistry
2009

Professional Experience

Private Practice, Ankara
Periodontologist & Implantologist
2018 - Present

• Provide specialized dental care in gingival diseases and implant surgery.
• Perform 500-1000 dental implant applications annually.
• Focus on gingival aesthetics, smile design, bone augmentation, sinus surgeries, and surgical treatment of gingival recession.

Oral and Dental Health Hospital, Ministry of Health
Specialist Dentist
2016 - 2018

• Specialized in gingival diseases and implant surgery.
• Worked in a high-volume setting, contributing to the improvement of patients’ oral health through advanced periodontal and implant procedures.

Erciyes University, Department of Periodontology
Research Assistant
2012 - 2016

• Assisted in clinical research and academic projects related to periodontology.
• Supported faculty with teaching and mentoring dental students.

Private Sector Dentist, Bolu and Ankara
General Dentist
2010 - 2012

• Provided comprehensive dental care and treatments to a diverse patient population.
• Gained valuable experience in patient management and clinical practice.

Professional Affiliations

• Turkish Periodontology Association
• Turkish Dental Association

Skills

• Gingival Aesthetics and Smile Design
• Dental Implant Surgery
• Bone Augmentation Procedures
• Sinus Surgeries
• Surgical Treatment of Gingival Recession
• Patient Care and Communication

Continuing Education

Regularly attend national and international conferences, workshops, and seminars to stay updated with the latest advancements in periodontology and implantology.

Languages Turkish (Native) & English

References : Available upon request.

Prof. Dr. Kamil Yalçın Polat is a leading transplantology expert and Head of the Organ Transplantation Center at Memorial Bahçelievler Hospital in Istanbul. With over 30 years of surgical experience, he founded the Organ Transplantation Center at Atatürk University (2003-2010) and completed fellowships at Mount Sinai Hospital and Memorial Sloan Kettering Cancer Center in New York. Dr. Polat has authored more than 50 scientific publications and serves as Vice President of the Turkish Hepatopancreatobiliary Surgery Society.