Best Doctors in the World

Dr. Md Merve Kaya is a key member of Este Favor’s personalized hair restoration program. She oversees treatment planning, donor area assessment, hairline design, graft distribution, and the overall procedure plan.

She prioritizes donor safety and efficient graft use. She uses AI Hair Mapping to define safe extraction zones, estimate graft capacity, and plan graft placement for current needs and possible future loss. Her approach focuses on natural hairlines and proper graft angles. She avoids overharvesting and tailors each plan to the patient.

Dr. Ersoy Kocabicak is the Rector of Atlas University and a neurosurgeon in Istanbul. He is a founding board member of the International Deep Brain Stimulation Association. Dr. Kocabicak specializes in neuromodulation and treats conditions like Parkinson’s and essential tremor. He has authored 46 international peer-reviewed articles on functional neurosurgery.

• Serves on the functional group committee of the European Association of Neurosurgery.
• Treats Parkinson's disease, Alzheimer's, and complex movement disorders through brain stimulation.
• Performs stereotaxic surgeries and vagus nerve stimulation for epilepsy patients.
• Served as the chairman of the Turkish Neurosurgical Association’s functional surgery group.

Dr. Dogan Gucluhan Guclu is a neurosurgeon at VM Medical Park Florya in Istanbul. He has performed advanced brain and spine surgeries since 2003. Dr. Guclu treats both adult and pediatric patients for complex neurological conditions. He practices at a JCI-accredited university hospital with Center of Excellence status.

• Specializes in Gamma Knife radiosurgery for brain tumors and neurological disorders.
• Performs minimally invasive and endoscopic procedures for tumor removal and spine repair.
• Treats complex conditions including scoliosis, brain aneurysms, and spinal stenosis.
• Expert in pediatric neurosurgery for spina bifida and childhood brain tumors.

Dr. Sait Aygün is a Urologist and Urological Surgeon currently seeing patients at Optimed International Çorlu Hospital.

Education & Certifications: Graduated from Hacettepe University Faculty of Medicine (English program, 2017) and completed his Urology residency at Ankara Bilkent City Hospital Department of Urology (2024). He also holds the international Bristol Urodynamics Certificate.

Experience: Completed clinical residency training at Ankara Bilkent City Hospital (2018–2024), served at Hakkari State Hospital (2024–2025), and joined the medical team at Optimed International Çorlu Hospital in 2025.

Core Expertise:
- Andrology & Sexual Health: Penile prosthesis implantation, surgical correction of penile curvature (plication and grafting), Peyronie’s disease surgery, male aesthetic procedures (penile lengthening and girth enhancement), and cryoablation/hyaluronic acid injections for premature ejaculation.
- Male Infertility & Men’s Health: Erectile dysfunction management, microscopic varicocelectomy, and undescended testicle surgery.
- Endourology & Stone Surgery: Retrograde intrarenal surgery (RIRS), ureterorenoscopy (URS), percutaneous nephrolithotomy (PCNL), and laparoscopic/open ureterolithotomy and pyelolithotomy.
- Urological Oncology: Laparoscopic radical/partial nephrectomy for kidney and ureteral tumors, radical cystectomy for bladder cancer, radical prostatectomy for prostate cancer, and orchiectomy for testicular tumors.
- General & Reconstructive Urology: Urethroplasty for urethral strictures, benign prostatic hyperplasia treatments (TUR-P, open prostatectomy), and medical circumcision.

Academic Publications: Contributed to clinical research on reconstructive urology, including published work on ventral-approach augmented non-transected anastomotic (vANTA) urethroplasty for bulbar urethral strictures.

Combining evidence-based clinical practices with minimally invasive and reconstructive surgical techniques, Dr. Aygün provides comprehensive urological care, serving his patients fluently in both Turkish and English.

Dr. Murat Aydin is an Associate Professor of Orthopedics and Traumatology at Büyük Anadolu Hospitals. He specializes in joint replacement, complex trauma reconstruction, and spine surgery. Dr. Aydin uses robotic-assisted techniques for knee and hip replacements to improve patient mobility.

• Performs robotic knee replacement and MAKOplasty for high-precision joint restoration.
• Treats complex traumatic injuries, including pelvic fractures and musculoskeletal reconstruction.
• Skilled in minimally invasive endoscopic discectomy and kyphoplasty for spine conditions.
• Integrates regenerative medicine and stem cell therapy for arthritis and knee pain.

Dr. Nurullah Ermis is an orthopedic surgeon at Central Hospital in Istanbul. He specializes in spine surgery, hip arthroplasty, and orthopedic trauma. Dr. Ermis is a widely published researcher. His studies are indexed in PubMed and Scopus. He presented at the 37th ESRA Congress in Dublin. Dr. Ermis works at a facility equipped with robotic surgical systems.

• Performs total hip and knee replacements alongside arthroscopic procedures.
• Treats complex conditions like Crowe IV dysplastic coxarthrosis and spinal deformities.
• Expert in surgical treatments for scoliosis and kyphosis in children and adults.
• Published studies on anesthesia techniques for better postoperative pain management in hip surgery.

Dr. Yasar Dag is an ophthalmologist at VM Medical Park Florya Hospital in Istanbul. He specializes in cataract surgery, corneal diseases, and strabismus. Dr. Dag previously served as a specialist at Basaksehir Cam and Sakura City Hospital. He is a member of the Turkish Ophthalmological Association.

• Performs corneal transplants, keratoplasty, and ocular trauma surgery.
• Completed vitrectomy training at Ulucanlar Eye Training and Research Hospital.
• Published over 10 research papers on tear film analysis and surgical margins.
• Works at a JCI-accredited university hospital with robotic and bariatric excellence centers.

Dr. Mustafa Ibas is an ENT and facial plastic surgeon at Atlas University Hospital in Istanbul. He specializes in childhood ENT diseases, rhinoplasty, and maxillofacial trauma surgery. Dr. Ibas is a published researcher with studies in international medical journals. He focuses on ear diseases, including hearing loss and chronic otitis media.

• Performs open, closed, and revision rhinoplasty alongside ethnic nose reshaping.
• Treats complex conditions like salivary gland diseases and sinus disorders.
• Published extensively on anti-inflammatory treatments for middle ear effusion.
• Works at AACI-accredited Atlas University Hospital, which treats 565,000 patients annually.

Dr. Onder Surgit is a professor of general surgery at Optimed International Hospital. He is a surgical instructor at the Advanced Medical Technologies Training Center (ITEM). Dr. Surgit treats cancer, obesity, and complex gastrointestinal conditions. He applies laparoscopic techniques for weight loss and tumor removal.

• Specializes in bariatric surgery including gastric sleeve, bypass, and balloon procedures.
• Performs oncological surgeries for breast, lung, stomach, and colon cancer.
• Served as a faculty member at Turgut Ozal and Atilim Universities.
• Works at AACI-accredited Optimed International Hospital in Tekirdag, Turkey.

The doctor is a member of the Turkish Neurosurgery Association, the Turkish Spine Association, and AOSpine. With an academic background from Marmara University in Turkey and further training at Yale School of Medicine in the USA, the doctor is well-versed in neurosurgery and spine-related medical practices.

Dr. Magrur Kazak is an Associate Professor at Bahçeşehir University Faculty of Dentistry in Istanbul. He specializes in restorative and conservative dental treatments like laser teeth whitening. Dr. Kazak earned his doctorate from Istanbul University. He spent a decade in private practice before transitioning into senior academic roles.

• Held past teaching positions at Bezmialem Vakif and Istanbul Aydin Universities.
• Treats patients at a university hospital featuring 183 dental units.
• Works at a facility accredited by the Turkish Medical Association.
• Focuses on improving clinical standards through academic research and practice.

Dr. Yavuz Aydin is a Professor of Obstetrics and Gynecology at VM Medical Park Florya Hospital. He specializes in IVF, intrauterine insemination, and microsurgical tuboplasty. Dr. Aydin previously held a professorship at Biruni University. He also served as a medical specialist at Istanbul University Cerrahpaşa.

• Holds membership in the American Society for Reproductive Medicine (ASRM).
• Is a member of the European Society of Human Reproduction and Embryology (ESHRE).
• Performs laparoscopic and hysteroscopic surgeries for conditions like endometriosis.
• Treats patients at a JCI-accredited university hospital in Istanbul.

Dr. Özcan Öztürk is an ENT surgeon at Central Hospital in Istanbul. He specializes in voice disorders, head and neck tumor surgery, and rhinoplasty. Dr. Öztürk utilizes endoscopic techniques for sinus and facial procedures. He provides individualized care for breathing issues, snoring, and sleep apnea.

• Published numerous scientific papers in international medical journals.
• Performs complex septoplasty, cochlear implant placement, and tympanoplasty.
• Works at a facility that treats over 138,000 patients every year.
• Expertise includes both aesthetic and functional nasal reconstructions.

Dr. Gunesh Yavuzer is a professor of physical therapy and a senior physician at Romatem Rehabilitation Centers. He holds a PhD from Erasmus University in the Netherlands. Dr. Yavuzer specializes in neurological recovery using robotic rehabilitation and gait analysis. He treats complex conditions like stroke, spinal cord injury, and Parkinson’s disease.

• Expert in robotic gait training and functional recovery for orthopedic cases.
• Published researcher with numerous international works in rehabilitation medicine.
• Treats patients at Romatem Hospitals, a center serving over 5,000 patients annually.
• Performs specialized procedures including Lokomat therapy and Anti-Gravity treadmill training.

Dr. Yasir Gozu is a general surgeon at Avrupa Cerrahi Proctology Center in Istanbul. He specializes in non-surgical treatments for hemorrhoids and pilonidal sinus. Dr. Gozu completed his medical training at Eskisehir Osmangazi University. He later specialized in general surgery at Haseki Training and Research Hospital.

• Performs laser surgery for perianal abscesses and anal fistulas.
• Treats genital warts and hidradenitis suppurativa without invasive surgery.
• Manages rectal prolapse using minimally invasive clinical protocols.
• Practices at a center that treats over 1,200 patients annually.

Dr. Kuzey Hekimoğlu is a dentist educated at the Biruni University Faculty of Dentistry. His training covers diagnosis, treatment planning, and restorative dentistry. He has practiced at Mira Clinic, serving both local and international patients.

He has completed more than 2,000 dental cases. His work includes aesthetic care, restorative procedures, smile design support, and comprehensive treatment planning. He uses modern techniques to achieve functional, natural results. He communicates clearly and keeps care centered on the patient.