Page 15 - Best Doctors in the World

Dr. Didem Altay Gazi is a Family Medicine Specialist. She focuses on preventive care, early diagnosis, and comprehensive patient management. She has practiced at Central Hospital, Liv Hospital, and Acıbadem. She provides personalized care to improve health and quality of life.

Her expertise includes checkups and health screening programs, chronic disease management, and immunization and vaccination programs. She is also experienced in patient-centered preventive medicine.

Name Surname : Alpaslan TERZİ

Birthplace - Year : 1974

Academic Title : Prof. Dr.

Foreign Language : English

Education

M.S. - Faculty of Medicine - Akdeniz University / 1999

Ph.D./S.Qualification/ Medical Specialization - General Surgery - İnönü University / 2004

Associate Professor General Surgery / 2011

Work Experience

Dr. Res. Assoc. - İnönü University / 1999-2004

Op.Dr. -Gemerek State Hospital / 2004-2005

Lecturer - Harran University Faculty of Medicine / 2005-2005

Medical Second Lieutenant - Adana Military Hospital / 2005-2006

Assist. Prof. Dr. - Harran University Faculty of Medicine / 2006-2011

Assoc. Prof. - Harran University Faculty of Medicine / 2011-2014

Assoc. Prof. - Zirve University EBN Faculty of Medicine / 2014-2016

Assoc. Prof. - Primary Hospital (part-time) / 2015-2016

Prof. Dr. - Zirve University EBN Faculty of Medicine / 2016-

Assoc. Prof. - Medikalpark Batman Hospital / 2016-2018

Assoc. Prof. - Private Zilan Hospital / 2018-2020

Assoc. Prof. - Özel Batı Hospital / 2020-

Associations and NGOs Membership

Turkish Surgical Association

Endocrine Surgery Association

Turkish Medical Association

Certificates Received

Experimental Animal Use Certificate

Experimental Cell Culture Certificate

Scientific Congresses and Courses Attended

Breast Diseases Congress 2015- Antalya

7th National Endocrine Surgery Congress 2015-Antalya

13th Medical-Surgical Endocrinology Postgraduate Education Course 2014-Antalya

19th National Surgery Congress 2014-Antalya

6th National Endocrine Surgery Congress 2013-Antalya

18th National Surgery Congress 2012- İzmir

17th National Surgery Congress 2010- Ankara

Course on Ethical Approach in Clinical Research. Gaziantep-2009

VI. National Trauma and Emergency Surgery Congress. Antalya-2007

3rd Çukurova Colo-Proctology & Stoma-Therapy Symposium. Adana-2007

Basic Statistics-e Course. 2007

XXI. Gevher Nesibe Medical Days IV. Experimental and Clinical Research Congress. Kayseri-2003

XXI. Gevher Nesibe Medical Days IV. Experimental and Clinical Research Congress Experimental Tumor Generation and Cell Culture Techniques Course. Kayseri-2003

XIX. Regional Surgery Congress. Malatya-2003

Turkish Hepato-Pancreato-Biliary Surgery Association Regional Meeting. Erzurum-2002

Specialties

Kidney and urinary tract endoscopic stone crushing treatment

Endoscopic Prostate and Bladder Surgery (TUR Method)

Diagnosis and surgery of testicular diseases

Diagnosis and treatment of infertility in men (Varicocele surgeries)

Diagnosis and treatment of sexual dysfunctions

Treatment of urinary incontinence in women

Treatment of nocturnal incontinence in children

Treatment of undescended testicle in children

Circumcision

Experience

1995-1999 Bilecik State Hospital Urology Clinic

1999-2002 Kocaeli Gölcük State Hospital Urology Clinic

2002-2006 Sakarya Karasu State Hospital Urology Clinic and Chief Physician

2006-2012 Kocaeli State Hospital Urology Clinic and Chief Physician

2012-2015 Kocaeli State Hospital Urology Clinic

2015-2018 Kocaeli Public Hospitals Secretary General

2018-2021 Kocaeli Provincial Health Director

2021-2023 Kocaeli Darıca Farabi Training and Research Hospital Urology Clinic

2023- 2024 Kocaeli Gölcük Necati Çelik State Hospital Urology Clinic

2024 Private Darıca Büyük Anadolu Hospital

Education

Uludag University Faculty of Medicine (graduation) 1988

Selcuk University Faculty of Medicine (specialization) 1994

1982-1988 Uludağ University Faculty of Medicine

1990 -1994 Selcuk University Faculty of Medicine, Department of Urology (Specialization)

Scientific Publications

Acar A., Sert I. Ü., Gürbüz R., Ergüney Ş: Submucosal methotrexate applications in inoperable bladder tumors.  S.Ü.T.F. Journal. 1993; 9(1):39-41

Acar A., Sert İ.Ü., Gürbüz R., Arslan E.M., Ergüney Ş. , : Bladder wall and prostate

Translated with DeepL.com (free version)

The doctor graduated from Hacettepe University Faculty of Medicine and completed an ENT residency at Ankara Training and Research Hospital. Advanced training was undertaken at the House Ear Institute in Los Angeles. Since 2011, the doctor has been a professor at Lokman Hekim Health Group, specializing in ENT diseases.

The doctor has published over 30 scientific articles in international journals, focusing on hearing loss, laryngeal cancer, and sinus conditions. The doctor is a frequent presenter at scientific meetings and has received recognition for excellence in clinical practice and surgical training models.

Clinical interests include hearing disorders, rhinological conditions, and oncological ENT cases. The doctor has participated in specialized courses and workshops internationally.

Prof. Dr. Ceyhun Bozkurt is a respected Pediatric Hematologist-Oncologist. He is known for his work in childhood blood disorders and cancers. He graduated from Cerrahpaşa Faculty of Medicine. He holds specializations in both Pediatrics and Pediatric Oncology. Since 2019, he has been Professor and Clinical Director at Bahçelievler Medical Park Hospital. He also serves as Vice Director of the Stem Cell Transplant Unit.

Dr. Bozkurt has published over 40 peer-reviewed articles. He is recognized for his work in leukemia, bone marrow transplantation, and stem cell therapy. He is a member of organizations such as SIOP and EBMT. His memberships show his dedication to high standards in clinical care and research.

Dr. Magrur Kazak is a specialist in restorative and conservative dental treatment. He earned his doctorate from Istanbul University Faculty of Dentistry (1997-2003). Since 2020, he has worked as an Associate Professor at Bahçeşehir University Faculty of Dentistry. He previously held academic positions at Bezmialem Vakif and Istanbul Aydin Universities.

Dr. Kazak has over 20 years of clinical and academic experience. He has made important contributions to dental education and practice. He also spent ten years in private practice. Dr. Kazak is known for his expertise in restorative dentistry and his dedication to improving dental care standards.

Dr. Mehmet Mehdi Deniz is an Associate Professor and general and bariatric surgeon at Vital Hospital. He has over 15 years of surgical experience, starting his career in 2008. His main areas of expertise are bariatric surgery, hernia repair, gastrointestinal disorders, and minimally invasive procedures. He performs Roux-en-Y gastric bypass and advanced laparoscopic surgeries.

Dr. Deniz is also an active medical researcher. He has co-authored more than nine international peer-reviewed publications, which have received over 180 citations. He holds the Turkish Surgical Association’s Competency Certificate (2011) and is a member of the Turkish Surgical Association, BMCD, and Turkish Medical Association.

As an educator, Dr. Deniz has taught key courses to more than 250 medical students. He has also attended over ten advanced surgical workshops. This shows his dedication to ongoing learning and surgical innovation.

Personal Information 

Sex:  Male

Born : 1968 

Professional Experience

Gayrettepe Florence Nigthingale Hospital

Medical Oncology Department

Besiktas/Istanbul/Turkey (ongoing)

Education:

He became Professor (22/April /2016)

Medical Oncology

Attending Phys.in Gastrointestinal Oncology (January 2005 ,2009)

Istanbul University Oncology Institue,

Department of Medical Oncology

Medical Oncology Fellowship (December 2001-December2004)

Istanbul University, Istanbul Medical Faculty

Hemodialysis Traning (May1996-January1997)

Istanbul University ,bCerrahpasa Medical Faculty

Internal Medicine Residency (November 1991-November 1996)

Istanbul University ,bCerrahpasa Medical Faculty

Ege University Medical Faculty (1985-1991)

Professional Experience

February 1999-November 2001

Metropolitan Florence Nigthingale Hospital

American Cancer Center, Gayrettepe/İstanbul

April1997- October 1998

Bayraktar Dialysis Center

Güngören/ Istanbul

Membership

Turkish Medical Oncology Association

ENET(European Neuroendocrine Tumour Society)

ESMO

ASCO

Dr. Emad Adden Abdallah is a neurosurgery specialist. He completed his residency at Balikesir University Health Practice and Research Hospital in Balıkesir, Turkey. He earned his medical degree from Balikesir University Faculty of Medicine.

He co-authored "Paraoxonase 1 Activity and Phenotype Distribution in Lumbar Disc Herniation Patients" (Turk Neurosurg. 2024;34(4):655-659; doi:10.5137/1019-5149.JTN.44307-23.2; PMID:38874244). His thesis was "Therapeutic Effect of Platelet-Rich Plasma and Chondroitinase ABC Combination in Rat Spinal Cord Injuries." Courses: Dr. Mehmet Zileli Advanced Spinal Surgery (2021), Minimally Invasive Spinal Surgery Symposium (2021), Pediatric Neurosurgery Course (2020).

EXPERIENCE

1997 – today

Gayrettepe Florence Nightingale Hospital

Orthopedics and Traumatology specialist

1996 – 1997

Cerrahpaşa Faculty of Medicine Department of Orthopedics and Traumatology

Chief Assistant Specialist Doctor

1992 – 1996

Istanbul University Cerrahpaşa Faculty of Medicine

Orthopedics and Traumatology, Specialist

1992 – 1996

Cerrahpaşa Faculty of Medicine Department of Orthopedics and Traumatology

Assistant Physician

1987 – 1991

Adana Reşat Bey Health Center

General practitioner

1985 – 1987

Trabzon Maçka (Compulsory Service)

General practitioner 

CLINICAL FOCUS 

Sports Injuries

Orthopedic Trauma

Knee Arthroscopy

Hip Arthroscopy

EDUCATION

Istanbul University Cerrahpaşa Faculty of Medicine

Medical Education

Education and Expertise

Istanbul University, Istanbul Faculty of Medicine

Istanbul University, Cerrahpaşa Faculty of Medicine

Northwestern University, Transplantation Center

Dr. Lütfi Kırdar Kartal Training and Research Hospital

Bezmialem Faculty of Medicine, Department of General Surgery

Experience

1992 to 1997 – Research Assistant at Istanbul University, Cerrahpaşa Faculty of Medicine, Department of General Surgery

1998 to 2002 – Fellow at Northwestern University, Transplantation Unit

2003 to 2008 – Chief Assistant at Kartal Training and Research Hospital

2008 to 2011 – Associate Professor at Kartal Training and Research Hospital

2011 to 2013 – Associate Professor at Bezmialem University Faculty of Medicine, Department of General Surgery

2013 to 2018 – Associate Professor at Kartal Training and Research Hospital


Professional Memberships

-Deutsche Gesellschaft Für Chirurgie

-American Society for Transplantation

-Breast Surgery Association

-Trauma Association

-Hepatobiliary Surgery Association

-Colorectal Surgery Association

Op. Dr. Veysi

Ophthalmologist

Education

Specialty Training
2011 - 2015
Izmir Atatürk Training And Research Hospital

Undergraduate Education
2003 - 2010
Ankara University Medicine Faculty

Experience

2022 -
ClinicExpert - Ophthalmologist

2021 - 2022
Aile Hospital - Ophthalmologist

2021 - 2022
Ataköy Hospital - Ophthalmologist

2020 - 2022
Maltepe University Medicine Faculty - Ophthalmologist

2018 - 2020
Memorial Şişli Hospital - Ophthalmologist

2017 - 2018
Aydın University Medical Park Hospital - Ophthalmologist

2017 - 2018
Gaziosmanpaşa Hospital - Ophthalmologist

2016
Artvin Hopa Hospital - Ophthalmologist

2010 - 2015
Izmir Atatürk Training and Research Hospital - Research

Skills

• I-Lasik Operation
• Lasik Operation
• Laser Surgery
• PRK Surgery
• Cataract Operation
• Strabismus Surgery
• Glaucoma Surgery
• Oculoplast (Upper Lower Lid Aesthetic, Eyebrow Lift, Ptosis Operation)
• Ektropion Entropion Operation
• Dsr, Botox, Filling, Medical Aesthetic

Associate Professor Dr. Nazlı Korkmaz is a specialist in obstetrics, gynecology, and IVF. She has strong experience in women’s health, minimally invasive surgery, and reproductive medicine. She has worked in hospitals across Turkey and has contributed to national and international scientific publications.

Her clinical work includes pregnancy follow-up, gynecological conditions, laparoscopic surgery, cosmetic gynecology, water birth, sexual therapy, IVF, menopause, and longevity care. She provides patient-centered care tailored to each person.

Dr. Sılay is an experienced pediatric urologist practicing in Turkey.

Specialty

Assoc. Prof. Selçuk Sılay specializes in robotic surgery for urology conditions in children.

Dr. Selçuk Sılay has provided over:

• 300 pediatric laparoscopic surgeries
• 100 pediatric robotic surgeries
• 300 closed kidney stone surgeries in children.

Work experience

• Since 2018 – Urologist in Memorial Bahçelievler Hospital and Memorial Ataşehir Hospital
• 2017-2018 – Pediatric urology robotic surgery specialist in Mehmet Akif Ersoy Training and Research Hospital
• 2016-2018 – Head of Pediatric Urology Department in Istanbul Medeniyet University Göztepe Training and Research Hospital
• 2011-2016 – Head of Pediatric Urology Department at the Bezmialem Foundation University
• 2009 – Urology Specialist in Diyarbakir Bismil State Hospital
• 2006-2007 – Urology and Robotic Surgery Specialist.

Education

• 1997-2003 – Ankara University Medical School – Degree in general medicine
• 2003 – Baylor College of Medicine (USA) – Training in urology
• 2004-2009 – Istanbul Şişli Hamidiye Etfal Education And Research Hospital – Training in urology
• 2006-2007 – Baylor College of Medicine (USA) – Internship in urology
• 2014-2015 – Texas Children's Hospital (USA) – Pediatric Urology Robotic Surgery Training (USA).

Awards

• 2016 Young Academician of the Year Award by the 24th National Urology Congress in Cyprus
• 2018 Crystal Matula Award as European Academician of the Year.

Scientific activity

Prof. Selçuk Sılay provides research in robotic surgery in children. Has written over 80 articles.

Membership in organizations

• The Turkish Society of Pediatric Urology
• The European Association of Urology
• The European Society for Paediatric Urology
• The Turkish Association of Urology.

After graduated from Ege University, Faculty of Dentistry in 2003 he started his PhD education in the Department of Periodontology, Institute of Health in the same university. Having completed the PhD education in 2009 he started to work as a research assistant in Ege University Faculty of Dentistry Department of Periodontology.

He became Assoc.Prof in 2015 and continued both clinical and academic research. In 2022 he became full professor and have published more than 30 studies in well-known scientific journals. He developed a connective tissue graft harvesting tool (Nizam Punch), which is being produced in Germany and two implant systems which are being used in many countries. He still keeps his academic position in Ege University Faculty of Dentistry, Department of Periodontology.  

Specializations

Hypertension

Cardiovascular Occlusion and Treatment

Heart Failure Diagnosis and Treatment

Heart Rhythm Disorders

High Cholesterol

Congenital Heart disease

Education

2009-2015 Azerbaijan Medical University Faculty of Medicine

2017 -2023 Kocaeli University Faculty of Medicine Cardiology Specialization Training

1995-2001 Konya Selçuk University Faculty of Medicine,

2002-2008 Ankara Gazi University Faculty of Medicine Chest Diseases Specialization Training,  

2008-2012 Chest Diseases Specialist at Şanlıurfa Mehmet Akif İnan Training and Research Hospital  

Gebze Fatih State Hospital between 2012-2024

2024 Büyük Anadolu Hospital Chest Diseases Specialist

I have experience in COPD, Asthma, Allergic Diseases, Pneumonia, Lung Cancer, Occupational Lung Diseases, Covid-19 Related Diseases, Pulmonary Tuberculosis, Bronchoscopy, intensive care, and sleep disorders.

Dr. Bilal Ergul, MD, is a pioneering force in the field of gastroenterology.  

His innovative treatment protocols have transformed the lives of many patients, including a remarkable case where he successfully treated a patient with a Peroral Endoscopic Myotomy (POEM) surgery.

Dr. Bilal Ergul, often says, ‘Healing is more than treating a condition; it’s about restoring hope and improving lives.’ This philosophy is evident in every aspect of his work, making his and his team truly inspirational figure in the medical community."
He has authored around 100 publications in different academic topics

Dr. Ayan graduated from Medical School in 1991 and completed his urology education in 1997. At the beginning of his carrier, he was a post doctorate research fellow at the Department of Urology of Harvard Medical School, Children’s Hospital in Boston (1999-2000). He studied the effect of partial ureteral obstruction to the kidney in early developmental stage in an experimental animal fetus model. This study provided a significant contribution to a complicated issue of pediatric urology and was cited many times by its successors. 

He became associate professor of urology in 2004 and was appointed as a professor of urology in 2009. He was accepted as a clinical fellow in Minimal Invasive Urologic Oncology at the Department of Surgery, Section of Urology at the University of Chicago (2014-2015). He worked in an intense oncology program mainly concentrated on robotic surgery of prostate and kidney cancer. Because of this background, he is mainly interested in urologic oncology and pediatric urology. The primary portion of his daily practice consist of kidney cancer, prostate cancer, bladder cancer, neonatal hydronephrosis, ureteropelvic junction obstruction, urine reflux to kidney, hypospadias and undescended testis. 

Because of its prevalence in Turkey, Prof. Ayan has a huge experience with urinary stone disease and he is doing large number of endoscopic and percutaneous surgeries for kidney, ureter and bladder stones. 

Prof. Ayan holds United States Medical License and European Board of Urology Certificate. He is a member of AUA, EAU and Turkish Urologic Surgery and Urologic Oncology Societies. 

List of International Scientific Publications; 

1. Ayan S, Yildirim S, Ucar C, Sarioglu Y, Gültekin EY, Butuner C. Corporal reactivity to adenosine and prostaglandin E1 in alloxan-induced diabetic rabbit corpus cavernosum and the effect of insulin therapy. BJU Int, 83: 108-12, 1999. 

2. Yildirim S, Ayan S, Sarioglu Y, Gültekin EY, Butuner C. The effects of long-term oral administration of L-arginine on the erectile response of rabbits with alloxan-induced diabetes. BJU Int, 83: 679-85, 1999. 

3. Ayan S, Kaloglu C, Gökce G, Kılıcarslan H, Gültekin EY. Effect of insulin therapy to diabetic cystopathy: urodynamic and histological findings in a rabbit model. Sc J Urol Nephrol, 33: 392-5, 1999. 

4. Yildirim S, Ayan S, Sarioglu Y, Gültekin Y, Uma S. Does diabetes mellitus affect the progress of tolerance to isosorbide dinitrate (ISDN) in corporal tissue? Nitric Oxide: Biology and Chemistry, 4: 29- 34, 2000. 

5. Ayan S, Sarioglu Y, Yildirim S, Gokce G, Bagcıvan I. Relaxation induced by omeprazole does not change in diabetic rabbit corpus cavernosum. BJU Int, 87(3):265-8, 2001. 

6. Ayan S, Gokce G, Kılıcarslan H, Kaya K, Gultekin EY. An unusual cause of urinary incon tinence: urethral coitus. Sc J Urol Nephrol, 35:254, 2001. 

7. Yildirim S, Simsek R, Ayan S, Gokce G, Sarıoğlu Y, Safak C. Relaxant effect of some benzothiazolinone dervatives on isolated rabbit corpus cavernosum. Urol Res, 29:182-5, 2001. 

8. Ayan S, Roth JA, Freeman MR, Bride SH, Peters C. Partial ureteral obstruction dysregulates the RAS in the fetal sheep. Urology, 58: 301-6, 2001. 

9. Kılıcarslan H, Ayan S, Gokce G, Kaya K, Gultekin EY. Cranial blind ending branch of a bifid ureter. Int Urol Nephrol, 32: 635-6, 2001. 

10. Gokce G, Kılıcarslan H, Ayan S, Yıldız E, Kaya K, Gultekin EY. Adenomatoid tumors of testis and epididym: a report of two cases. Int Urol Nephrol, 32:677-80, 2001. 

11. Ayan S, Gokce G, Kılıcarslan H, Ozdemir O, Yildiz E, Gultekin EY. K-RAS mutation in transitional cell carcinoma of urinary bladder. Int Urol Nephrol, 33:363-67, 2001. 

12. Bulut HE, Onarlıoglu B, Kaloglu C, Özdemir Ö, Ayan S. Effects of experimental diabetes and insulin treatment on rabbit renal morphology: a quantitative and qualitative study. Turk J Med Sci, 31: 209-16, 2001. 

13. Kılıcarslan H, Gokce G, Ayan S, Gultekin EY, Arıkan Y, Hocaoglu S. Fournier’s gangrene: a report of 20 cases. T Klin J Med Res 19:55-58, 2001. 

14. Gokce G, Kılıcarslan H, Ayan S, Tas F, Akar R, Kaya K, Gultekin EY. Genitourinary tuberculosis: A review of 174 cases. Scand J Infect Dis, 34: 338-40, 2002. 

15. Kilicarslan H, Yildirim S, Bagcivan I, Ayan S, Sarac B, Sarioglu Y. Effect of chronic renal failure (CRF) on purinergic responses of corpus cavernosal smooth muscle in rabbits. BJU Int 90(6):596-600, 2002. 

16. Bagcivan I, Gokce G, Ayan S, Yildirim S, Sarac B, Kilicarslan H, Sarioglu Y. Hydrogen-potassium ATPase inhibitors induce relaxation on rabbit prostatic strips in vitro.Int J Urol.;9(11):641-4; discussion 645, 2002. 

17. Bagcivan I, Kilicarslan H, Sarac B, Gokce G, Yildirim S, Ayan S, Sarioglu Y. The evaluation of the effects of renal failure on erectile dysfunction in a chronic renal failure (CRF) rabbit model. BJU Int.;91(7):697-701, 2003 

18. Kilicarslan H, Guvenal T, Ayan S, Gokce G, Cetin A, Gultekin Y. Comparison of outcomes of three different surgical techniques performed for stress urinary incontinence. Int J Urol.;10(3):126- 30, 2003. 

19. Kaya S, Poyraz O, Gökçe G, Kılıçarslan H, Kaya K and Ayan S. Role of Genital Mycoplasmata and Other Bacteria in Urolithiasis. Scand J Infect Dis, 35:315-317,2003. 

20. Kilicarslan H, Gokce G, Ayan S, Atalar M, Kaya S, Kaya K, Gultekin Y. A case of hydatid disease: urinary retention due to isolated retrovesical hydatid cyst in a boy. Scand J Infect Dis, 35 :408-410, 2003. 

21. Gokce G, Kaya K, Kılıcarslan H, Tas F, Ayan S, Yıldız E, Gultekin E Y. Epidermoid cyst in the renal pelvis. Int Urol Nephrol;35(1):9-10, 2003. 

22. Kilicarslan H, Gokce G, Ayan S, Guvenal T, Kaya K, Gultekin EY. Predictors of outcome after in situ anterior vaginal wall sling surgery. Int Urogynecol J Pelvic Floor Dysfunct ;14(5):339-41, 2003. 

23. Kilicarslan H, Gokce G, Kaya K, Ayan S, Gultekin YE. Surgical treatment of penil fractures. Ulus Travma Derg.;9(1):54-6, 2003. 

24. Yildiz E, Gokce G, Kilicarslan H, Ayan S, Goze F, Gultekin EY. Prognostic value of the expression of Ki-67, CD44 and vascular endothelial growth factor, and microvessel invasion, in renal cell carcinoma. BJU Int. 2004 ;93(7):1087-93. 

25. Gokce G, Topsakal K, Ayan S, Kilicarslan H, Gokce SF, Gultekin EY. Case report: Nonobstructive giant urethral stone with two safety pins. Int Urol Nephrol. 2004;36(1):65-6. 

26. Kaya K, Ayan S, Gokce G, Kılıcarslan H, Yildiz E, Gultekin EY. Urinary nuclear matrix protein 22 for diagnosis of renal cell carcinoma. Scand J Urol Nephrol. 38 :1-5,2004. 

27. Ayan S, Kaya K, Topsakal K, Kılıçarslan H, Gokce G, Gültekin Y. Efficacy of tolterodine as a firstline treatment for non-neurogenic voiding dysfunction in children. BJU Int. 96(3):411-4, 2005. 

28. Kaya K, Gokce G , Kaya S, Kilicarslan H, Ayan S, Gultekin EY. Isolated renal and retropertoneal hydatid cysts: a report of 23 cases. Trop Doct. 2006 Oct;36(4):243-6. 

29. Candan F, Ayan S, Tas F, Gokce G, Elagoz S. Spontaneous renal laceration as the presenting feature of polyarteritis nodosa in a patient with familial Mediterranean fever after hepatitis A infection. Rheumatol Int, 25(6):475-7, 2005. 

30. Silig Y, Pinarbasi H, Gunes S, Ayan S, Bagci H, Cetinkaya O. Polymorphisms of CYP1A1, GSTM1, GSTT1, and prostate cancer risk in Turkish population. Cancer Invest, 24(1):41-5, 2006. 

31. Tanzer F, Ozgur A, Bardakci F, Cankorkmaz L, Ayan S. Analysis of a 1-year-old cystinuric patient with recurrent renal stones. Int J Urol. 13(10):1347-9, 2006. 

32. Kilicarslan H, Ayan S, Vuruskan H, Gokce G, Gultekin EY.Treatment of detrusor sphincter dyssynergia with baclofen and doxazosin. Int Urol Nephrol. 2006;38(3-4):537-41. 

33. Ayan S, Topsakal K, Gokce G, Gultekin EY.Efficacy of combined anticholinergic treatment and behavioral modification as a first line treatment for nonneurogenic and nonanatomical voiding dysfunction in children: a randomized controlled trial. J Urol. 2007 Jun;177(6):2325-8; discussion 2328-9. 

34. Ozdemir O, Gul E, Kilicarslan H, Gokce G, Beyaztas FY, Ayan S, Sezgin I.SRY and AZF gene variation in male infertility: a cytogenetic and molecular approach. Int Urol Nephrol. 2007;39(4):1183-9. 

35. Yildiz E, Ayan S, Goze F, Gokce G, Gultekin EY. Relation of microvessel density with microvascular invasion, metastasis and prognosis in renal cell carcinoma. BJU Int. 2008 Mar;101(6):758-64. 

36. Kenan Kaygusuz, Gokhan Gokce, Iclal Ozdemir Kol, Semih Ayan and Sinan Gursoy. Efficacy of Preventive Analgesia with Tramadol or Lornoxicam for Percutaneous Nephrolithotomy: A Prospective, Randomized, Double-Blind, Placebo-Controlled Study. Current Therapeutic Research 68(4), 205-216, 2007. 

37. Kaygusuz K, Gokce G, Gursoy S, Ayan S, Mimaroglu C, Gultekin Y.A comparison of sedation with dexmedetomidine or propofol during shockwave lithotripsy: a randomized controlled trial. Anesth Analg. 2008 Jan;106(1):114-9. 

38. Gokce G, Karboga H, Yildiz E, Ayan S, Gultekin Y. Effect of angiotensin-converting enzyme inhibition and angiotensin II type 1 receptor blockade on apoptotic changes in contralateral testis following unilateral testicular torsion. Int Urol Nephrol. 2008;40(4):989-95. 

39. Ozdemir, O (Ozdemir, Oztuerk); Yildiz, E (Yildiz, Esin); Ayan, S (Ayan, Semih); Gul, E (Gul, Eylem)1; Gokce, G (Gokce, Goekhan); Yildiz, F (Yildiz, Fazilet)1; Koksal, B (Koksal, Binnur)1; Goze, F (Goze, Fahrettin); Gultekin, EY (Gultekin, E. Yener). Epigenetic alterations and oncogenes mutations in urinary bladder carcinomas.CHROMOSOME RESEARCH. 2009, Volume: 17 Supplement: 1 Pages: 171-171 

40. Eskicorapci SY, Türkeri L, Karabulut E, Cal C, Akpinar H, Baltaci S, Baykal K; Turkish Validation Study Group of Kattan Preoperative Nomogram, Kattan MW, Ozen H. Collaborators: Yildirim A, Yazici S, Divrik RT, Ozkardeş H, Koşan M, Kurtuluş FO, Büyükalpelli R, Mungan A, Lekili M, Sahin H, Günlüsoy B, Ayan S, Bozlu M. Validation of two preoperative Kattan nomograms predicting recurrence after radical prostatectomy for localized prostate cancer in Turkey: a multicenter study of the Urooncology Society. Urology. 2009 Dec;74(6):1289-95. 

41. Ozdemir O, Yildiz S, Ayan S, Gül E, Gokce G, Yildiz F, Koksal B. Promoter hypermethylation of tissue specific tumor supressor genes and point mutation in K-ras, c-myc proto-oncogenes in urinary (transitional cell) bladder carcinoma. Health. 2010; 2(8):850-856. 

42. Türkeri L, Tanıdır Y, Çal Ç, Özen H, Şahin H; Collaborators :Kaya C, Karaman İ, Şengör F, Alkibay T, Sözen S, Büyükalpelli R, Can C, Kuyumcuoğlu U, Albayrak S, Abay E, Soyupak B, Tansuğ Z, Fazlıoğlu A, Gültekin Y, Ayan S, Gümüş E, Lekili M, Dillioğlugil Ö, Özer G, Uygur C, Akpınar H. Comparison of the efficacy of single or double intravesical epirubicin instillation in the early postoperative period to prevent recurrences in non-muscle-invasive urothelial carcinoma of the bladder: prospective, randomized multicenter study. Urol Int. 2010;85(3):261-5. 

43. Kuzgunbay B, Yaycioglu O, Soyupak B, Atay Kayis A, Ayan S, Yavascaoglu I, Cal C, Beduk Y; Turkish Study Group of Public Awareness in Testicular Cancer Public awareness of testicular cancer and self-examination in Turkey: A multicenter study of Turkish Urooncology Society.Urol Oncol. 2011 Mar 22. Epub ahead of print] 

44. Biçer H, Korgali E, Gökçe G, Ayan S, Yıldırım S, Gültekin EY. Contractile responses of urinary bladder in an experimental model of chronic renal failure. Bosn J Basic Med Sci. 2012 Nov;12(4):219- 23. 

45. Yaycioglu O, Eskicorapci S, Karabulut E, Soyupak B, Gogus C, Divrik T, Turkeri L, Yazici S, Ozen H; Society of Urooncology Study Group for Kidney Cancer Prognosis. A preoperative prognostic model predicting recurrence-free survival for patients with kidney cancer. Jpn J Clin Oncol. 2013 Jan;43(1):63-8. 

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Assoc. Prof. Dr. Necati Kaplan is a neurosurgeon specializing in brain, spine, and peripheral nerve surgery. He treats tumors, vascular disorders, hydrocephalus, trauma, degenerative spine disease, pediatric neurosurgical conditions, and Chiari malformation. He also works with experimental stem cell and exosome therapies.

He graduated from Cerrahpaşa Faculty of Medicine in 2000. He completed training in Minimally Invasive Neurosurgical Techniques in Mainz/Tuttlingen in 2016. He also trained in Advanced Neuroendoscopy (2004), the Keyhole concept (2003), Microsurgery at GATA (2005), Pediatric Neurosurgery (2015), and minimally invasive lumbar surgery (2015).

He has served as a Board Member of the Association of Nervous System Surgery since 2018. He is a member of the Turkish Neurosurgical Association (since 2008) and the Association of Stem Cell and Cellular Therapies (since 2019). He co-authored series on vertebroplasty (111 patients/140 segments), 200 anterior cervical surgeries, 271 lumbar microdiscectomies, 673 mild head trauma cases, and stem cell therapies.