Page 8 - Best Biopsy doctors: TOP 400 doctors

Dr Önul is FROM THE BEST DOCTORS in the field of Endoscopic skull base surgery and pituitary surgery Brain tumor surgery (Neuro Oncological surgery)


I was born in Artvin in 1977. He became a doctor from KTU Faculty of Medicine in 2001, and Bakırköy Prof. Dr. I became a Neurosurgery Specialist by getting the title of specialist from Mazhar Osman Mental Health and Neurological Diseases Training and Research Hospital. Again, in the same hospital, I was entitled to the title of associate professor in 2016. I continue to work at Başakşehir Çam and Sakura City Hospital, where I voluntarily joined with the task of establishing the Neurosurgery Clinic with my teammates. I am married and have 2 children. I love painting. I am very interested in children's literature. I have 10 printed children's tales

Work experience:

• Zeynep Kamil Hospital, Istanbul
• OTE (Postgraduate Medical University) Budapest
• Between 1993 and 1995 Beyoglu Hospital, Istanbul
• Between1995 and 2017 Unimed/Intermed Clinic (Currently)
• 25 years working at Unimed - Intermed as a gynaecologist and obstetrician
• For 20 years I have been the Corporate Director of Unimed.
• For 10 years I worked as Acting Manager for the same company
• 3 years as an Affeda occupational physician

International experience

• 1987-1990: Zeynep Kamil Nursing Home, Istanbul
• 1993-1995: Beyoglu Hospital, Istanbul
• 1995-2017: Unimed/Intermed Clinic, Turkey

Job Experience

2000 - 2006 Physician Biophysicist 

Traumatology Institute, Baku, Azerbaijan

 2016 Research Assistant

 Gazi University, Department of Obstetrics and Gynecology, Ankara,Turkey

 2016-2020 Assistant Doctor

 Kocaeli Derince Training and Research Hospital,

 Department of Obstetrics and Gynecology, Kocaeli Turkey

2020-2022 Obstetrician-Gynecologist Specialist Doctor

 Erzincan Binali Yildirim University Mengucek Gazi Training and

Research Hospital, Department of Gynecology and Obstetrics,

 Erzincan, Turkey

 2022-2023 Obstetrician-Gynecologist Specialist Doctor

 Kandıra State Hospital / Kocaeli Derince Training and Research Hospital, Turkey

2023 - present Obstetrician-Gynecologist Specialist Doctor

Florence Nightingale Hospital

Dr. Hossein Taghizadeh is a highly regarded Austrian specialist in internal medicine, hematology, and medical oncology, known for his compassionate approach and commitment to personalized cancer care. With extensive experience in treating solid tumors and blood cancers, he represents a new generation of oncologists who integrate scientific progress with empathy and precision.

He studied medicine at the Medical University of Vienna, graduating in 2016, and began his residency in internal medicine and oncology shortly thereafter. His academic and clinical training at leading Austrian cancer centers equipped him with deep expertise in systemic cancer therapy, hematologic diseases, and palliative medicine.

2010–2016 – Studied medicine at the Medical University of Vienna.

2018 – Began residency in internal medicine and medical oncology, focusing on individualized treatment strategies.

2020s – Specialized in solid tumors, hematologic malignancies, and targeted therapy, contributing to multidisciplinary oncology care.

Today – Practices as an oncologist at Oncodoc and Wiener Privatklinik, providing diagnostics, systemic treatment, and follow-up for patients with gastrointestinal, urogenital, and hematologic cancers.

Dr. Taghizadeh’s clinical interests include gastrointestinal tumors, pancreatic and biliary cancers, genitourinary malignancies, and hematologic neoplasms. He works with advanced diagnostic tools and modern systemic therapies, including chemotherapy, targeted therapy, and immunotherapy.

Known for his calm professionalism, integrity, and patient-centered communication, Dr. Taghizadeh places great emphasis on evidence-based medicine and emotional support throughout the treatment journey. His work reflects a modern, holistic approach to oncology — one that values both medical excellence and the human experience behind every diagnosis.

Univ.-Prof. Dr. Wolfgang Johannes Köstler is a board-certified specialist for Internal Medicine, Hematology/Oncology, and Intensive Care Medicine who specializes in hematology & internal oncology, intensive care medicine. He is one of the top-rated breast cancer and sarcoma oncologist specialists and has extensive experience in the field and has received degrees from the Medical University of Vienna and the Weizmann Institute of Science. He has also had special training at Memorial Sloan-Kettering Cancer Center and Royal Prince Alfred Hospital.

Physician's Curriculum Vitae

Education and Specialization

1983-1989 - Firat University Faculty of Medicine

1993-1997 - DR. ZEKAI TAHIR BURAK WOMEN'S DISEASES AND BIRTH HOSPITAL, Women's Diseases and Obstetrics Specialization Training

Experience

Medicalpark Bahçelievler Hospital, Women's Diseases and Obstetrics Specialist

Kayseri Private Ibn Sina Hospital, Women's Diseases and Obstetrics Specialist

Dr. Zekai Tahir Burak Women's Diseases and Obstetrics Training and Research Hospital, Women's Diseases and Obstetrics Specialist

Courses and Certifications

(2011) 20th Annual Congress of the European Society for Gynaecological Endoscopy (ESGE) 2011, London

(2009) PGS: Is it the correct answer to the right question? Fertility treatment: from the past to the future. October 2–3, 2009, Prague, Czech Republic

(2009) 8th TURKISH-GERMAN Gynecology Congress, April 29–May 3, 2009, Antalya; Ovulation Induction Course

(2005) American Hospital Laparoscopy and Hysteroscopy Course

(2002) 2nd National In Vitro Fertilization Ovulation Induction Course

(1997) Dr. ZTB Laparoscopy and Hysteroscopy Courses

(1995) ITEM Laparoscopy Basic Training Course

Professional Memberships

Turkish Society of Gynecology

National Perinatology Association

Turkish Society of Reproductive Endocrinology and Infertility (TSRM)

Dr. Vilius Kontenis is a gastroenterologist and endoscopist. He trained at Vilnius University and earned his MD in 2014. He completed his gastroenterology residency in 2018. Since then, he has worked at Mažeikiai Hospital as a gastroenterologist and endoscopist. He also practices at Kardiolita Clinics in Vilnius as a gastroenterologist.

His work includes a systematic review and meta-analysis on inflammatory bowel disease. He has studied liver fibrosis, comparing FibroScan with routine tests. He has also published on dysphagia in older adults, pediatric diarrhea, and food allergy. He has presented on chylous ascites and catastrophic antiphospholipid syndrome. He edited issue No. 1 of Gastroenterologija. He attended the 35th GEEW in 2017. He is a member of the Lithuanian Gastroenterology Association and the World Gastroenterology Organisation.

Dr. Tomas Jucaitis is a gastroenterologist and endoscopist. He studied at Kaunas University of Medicine from 1991 to 1998 and graduated in 1998. He completed a primary residency at Ukmergė Hospital in 1999 (1998–1999). He then finished an internal medicine residency at Vilnius University (1999–2001). He later completed a gastroenterology residency (2001–2003). His training also includes internships in the Czech Republic, Germany, and the USA.

He was Coordinator at the National Organ Transplantation Bureau from 2001 to 2004. He worked as an endoscopist and ultrasound specialist at Vilnius Emergency University Hospital from 2003 to 2006. Since 2006, he has practiced as a gastroenterologist and endoscopist at Vilnius University Hospital “SK” Center Branch and at Vilnius “Kardiolita Clinics.” He also held prior roles at Švenčionys Hospital and “Northway” Medical Center.

Dr. Laura Masalaite is a gastroenterologist and endoscopist at VUL Santaros Clinics and Kardiolita Clinics. She became Acting Head of the Organ Transplantation Coordination Centre in 2024. From 2007 to 2024, she served as Senior Specialist. She has been an Associate Professor at Vilnius University since 2024.

She completed a PhD in Medicine in 2014 (2010–2014). She finished a gastroenterology residency in 2010 (2006–2010). She is a licensed gastroenterologist (MPL15909; 2010-06-30). Her advanced training includes liver transplantation in Vienna (2023–2024) and Warsaw (2010). She also trained in endoscopy and ultrasound in Wuppertal and completed UEG courses. She obtained GCP certification in 2023.

She has published in Cancers, Scandinavian Journal of Gastroenterology, and Hepatology International. Her work covers national 5-year colorectal screening and EUS for predicting variceal recurrence. She has also studied adenoma detection rate, Zenker diverticulotomy, portal vein flow in pancreatitis, diastolic dysfunction in cirrhosis, and early outcomes after liver transplantation.

Education and Expertise

GATA Military Medical Faculty

GATA Haydarpaşa Training Hospital Neurosurgery Clinic (Specialization)

Beykent University Hospital and Health Institutions Management (Master's)

Experience

GATA Military Medical Faculty Trainee Doctor (6 months)

Samsun Sahara Medical School Comm. (3 months)

Naval Command War Squadron TCG Diligence Medical Officer (2 years)

Dz.K.K. Submarine Battery Factory Infirmary Doctor (3 months)

Naval Forces Command Infirmary Doctor (3 months)

GATA Haydarpaşa Training Hospital Chief Assistant (12 years)

Kasımpaşa Marine Hospital Neurosurgery Clinic Chief (5 years)

Bahçelievler Medical Park Hospital Neurosurgery Specialist (11 years)

Altınbaş University Faculty of Medicine Neurosurgery Lecturer. Member (4 years)

Altınbaş University Faculty of Medicine Head of Neurosurgery Department. (3 years)

Basic and Advanced Cardiac life support courses (BASIC)

Basic and Advanced Cardiac life support courses (ADVANCED)

GATA Military Medical Faculty. Microsurgery Training Course

Istanbul Vatan Hospital Hand surgery microsurgery course

Neuroanatomy course

Spine Surgery course

Professional Memberships

Turkish Neurosurgery Association

Spine Society of Europe

Turkish Spinal and Peripheral Nerve Surgery Group

Dr. Ender Güven

Gynecology and Obstetrics Specialist

For many years, Painless (Epidural) Birth, Normal Vaginal Birth and Caesarean Section, Risky Pregnancy Follow-Up, Genital Aesthetic Operations, Minimally Invasive Gynecological Operations (Laparoscopic Surgery and Laparoscopic Myomectomy Hysteroscopic Surgical Interventions), Gynecological Oncology (Cancer Surgeries Follow-up and Colposcopy), Infertility ( I worked on infertility issues.

My articles have been published in many international journals. I am a member of the Turkish Gynecology and Obstetrics Association.

Experience 11 years

His medical interests include Normal Vaginal Birth and Caesarean Section, Laparoscopic Surgery, Laparoscopic Myomectomy, etc.

List of Treatments

IUI - Intrauterine Insemination

Ovulation Induction Procedure

Over Drilling (Multi-Hole)

Urethral Valves

colposcopy

Diagnostic Hysteroscopy

Female Sterilization - Tubectomy

Laparoscopic Gynecological Surgery

Laparoscopic Hysterectomy

Laparoscopic Supracervical Hysterectomy

Laparoscopic Treatment

Ovarian Cyst Removal

Pelvic surgery

Pelvic Reconstructive Surgery

Robotic Women's Surgery or

Advanced Robotics

Endometriosis Surgery

Therapeutic Hysteroscopy

Uterine Fibroid Embolization (UFE)

Fibroid Removal Myomectomy

Sacrocolpopexy

Adhesion Surgery

Diagnostic Laparoscopy

hysteroscopy

Endometrial Ablation

polypectomy

myomectomy

Diagnostic hysterectomy

hysterectomy

Anterior Posterior Repair Colporry

Posterior repair

Bladder Slings (TOT and TVT slings)

colporrhaphy

LEEP - Loop Electrosurgical Excision Procedure

IUD Insertion - Intrauterine Device Insertion

Cervical polyp removal

Male Factor Infertility

Preimplantation Genetic Diagnosis - PGD

PGT

Intracytoplasmic sperm injection

ICSI

Donor Oocytes

Polycystic Ovary Syndrome (PCOS) Treatment

Recurrent Miscarriage Treatment

endometriosis

Treatment for Irregular Periods (Irregular Menstrual Cycle)

Hirsutism Treatment

Hyperprolactinemia Treatment

Perimenopause Treatment

Premature Ovarian Failure

Oocyte Cryopreservation (Egg Freezing)

Ovarian Tissue Freezing

Anal Sphincteroplasty

Bladder Placement

Botulinum Toxin Injections

cystoscopy

Gynecological Reconstructive Surgery

Pelvic Floor Reconstruction

Adding Evil

Prolapse Surgery or Surgical Repair

POP - Pelvic Organ Prolapse Treatment

SNS - Sacral Nerve Stimulation

Sling Procedures for Urinary Incontinence

Urethral Bulking Injections

Urodynamic Test

vestibulectomy

In Vitro Fertilization with Donor Eggs

Blocked Fallopian Tube Treatment

oophorectomy

Hysteroscopy and Tube cannulation

Total Abdominal Hysterectomy

Radical Hysterectomy with Lymph Node Dissection

Ovarian Biopsy

cesarean section

Laparoscopic Myomectomy

Salpingo Oophorectomy

salpingectomy

Ovarian laparotomy

Education

2005 – M.D., Istanbul University, Istanbul Faculty of Medicine

2010 – Internal Medicine Specialization, Haseki Training and Research Hospital

2021 – Gastroenterology Subspecialty Training, Sakarya University Faculty of Medicine

Academic & Professional Experience

Assistant Professor, Istanbul Florence Nightingale Hospital

Assistant Professor, Istanbul Bilim University Faculty of Medicine

Assistant Professor, Istanbul Yeni Yüzyıl University Faculty of Medicine

Head of Department, Giresun University Faculty of Medicine

Scientific Publications

Dr. Acar has authored over 20 international peer-reviewed articles in the fields of internal medicine and gastroenterology. Her notable contributions include studies and case reports on:

Gastrointestinal bleeding management in anticoagulant users

Rare GI cases such as bezoars, aortoesophageal fistulas, and massive hemorrhagic ascites

Liver transplantation complications, including graft-versus-host disease

The role of (pro)hepcidin in IBD-related anemia

Endoscopic interventions for acute GI bleeding

Covid-19 treatment agents and their GI implications in Turkey

(Full publication list available upon request)

Clinical Expertise

Gastrointestinal bleeding & endoscopic procedures

Hepatology & liver disease management

Inflammatory bowel diseases (IBD)

Complex GI case diagnostics

Post-transplant GI complications

Diabetic GI and cardiovascular comorbidities

Dermatologist

Dr. Sebastian F. Schoppmann is an expert in general and visceral surgery. He has focused on upper gastrointestinal (GI) surgery since 2007. He leads the Gastroesophageal Tumor Unit (CCC-GET) at the Comprehensive Cancer Center Vienna. He is also an Associate Professor of Surgery at the Medical University of Vienna.

Dr. Schoppmann has published over 240 peer-reviewed articles. He serves as a consulting or associate editor for several leading surgical and oncology journals. He is the General Secretary of the Austrian Society of Surgical Oncology. He has also held important leadership roles in surgical oncology organizations. His work has helped advance upper-GI cancer surgery.

Dr. Martin Schindl is a senior consultant at the University Hospital of Surgery, Vienna General Hospital. He specializes in surgery of the pancreas, liver, gallbladder, and bile ducts. He also focuses on surgical cancer therapy. Dr. Schindl leads the surgical outpatient clinic for pancreatic and biliary diseases. He coordinates the interdisciplinary pancreatic cancer group at the Comprehensive Cancer Center Vienna.

He founded the ABCSG Pancreas Working Group. Dr. Schindl reviews articles for international surgical journals. He is a member of several national and international surgical societies. He also serves on the ethics committee of the Medical University of Vienna. Dr. Schindl has made important contributions to cancer therapy research and patient support programs.

Dr. Viola Fox is the Chief Physician at the Clinic for Haematology, Oncology, and Palliative Medicine at BKZ Solingen. This clinic is a certified interdisciplinary cancer center. Dr. Fox is a leading expert in drug therapy for tumor diseases in Germany and Europe. She has more than 15 years of experience in this field.

She is a member of the German Society of Oncology and Haemato-oncology (GDHO), the German Association of Physicians, and the American Association for Cancer Research. Dr. Fox is also active in molecular biology research. Her work supports progress in cancer treatment and molecular diagnostics.

Her main areas of expertise are chemotherapy, immunotherapy, targeted therapy, and radiation therapy. Dr. Fox is known for her innovative methods and strong commitment to patient care. Her efforts have led to high recovery rates and recognition from her peers.

Dr. Victor Alexander Krol - Chief of Gastroenterology, Internal Medicine and Obesity Treatment Center at Martinus Hospital

Dr. Victor Alexander Krol is a highly qualified specialist, heading the departments of gastroenterology and internal medicine. With many years of experience and deep knowledge in his field, Dr. Krol has established himself as an outstanding expert, providing patients with comprehensive treatment and an individual approach. He actively uses the latest methods of diagnosis and treatment of diseases of the gastrointestinal tract, metabolism, as well as diseases of the cardiovascular and respiratory systems.

Dr. Krol is also the director of the certified Obesity Treatment Center at Martinus Hospital, which provides surgical and endoscopic treatments for obesity. The center uses advanced technology to diagnose and treat obesity (adiposis), including methods such as bariatric surgery, endoscopic weight loss, and specialized programs for patients with different stages of obesity. The center is certified to high standards and has excellent results in the treatment of this serious disease.

The Gastroenterology Department, headed by Dr. Krol, diagnoses and treats diseases of the stomach, intestines, liver, pancreas, and gallbladder. The doctors of the department use a wide range of methods, including endoscopic procedures, ultrasound, and other modern diagnostic technologies.

The Department of Internal Medicine covers a wide range of diseases, including cardiology, diabetology, infectology, and therapy of respiratory and renal diseases. Dr. Krol and his team provide a comprehensive approach to treatment using the most advanced methods of medicine.

Thanks to his high professionalism and humane approach to each patient, Dr. Krol deservedly enjoys the respect of colleagues and patients.

Dr. Séverine Iborra is the Chief Physician of the Department of Gynecology and Obstetrics at Städtisches Klinikum Solingen. Her responsibilities include obstetrics, the delivery room, the neonatal unit, and gynecology. The department also includes the Senology/Breast Clinic at the Bergisches Breast Center Solingen, led by Dr. Manuela Seifert.

Dr. Séverine Iborra is originally from France. She began her medical studies at the University of Lyon and later transferred to Albert-Ludwigs University in Freiburg, where she received her medical license in 2007. She earned her doctorate in 2008 for experimental research in molecular oncology. From August 2008 to November 2013, Dr. Iborra worked as a resident at the University Women’s Clinic in Freiburg. After passing her specialist exams in gynecology and obstetrics, she continued her career as a specialist at the same clinic. In November 2015, she moved to RWTH University Hospital Aachen as a senior physician.

At the Clinic for Gynecology and Obstetrics, under the leadership of Prof. Dr. E. Stickeler, Dr. Iborra led the obstetrics department from 2017 to 2019. Since December 2017, she was responsible for organizing education in the department, and in October 2019, she became the Managing Senior Physician and Personnel Senior Physician of the clinic, a position she held until she moved to Solingen.

In addition to her scientific work, with numerous publications and presentations at major gynecological conferences, Dr. Iborra deepened her medical specialties. She obtained certifications in oncological diagnostics and therapy from the Gynecological Oncology Working Group, as well as additional qualifications in Cervical Pathology and Colposcopy (AGCPC), Urogynecology and Pelvic Reconstructive Surgery (AGUP), and the Professional Association of Gynecologists (BVF).

In 2019, Dr. Iborra successfully completed further specialization in “Gynecological Oncology” and “Special Obstetrics and Perinatal Medicine.” She is an active member of leading German medical societies in her field, including the German Society for Gynecology and Obstetrics, the Cervical Pathology and Colposcopy Working Group, and the German Society for Prenatal and Birth Medicine.

Treatments Offered in Our Gynecology Department

• Hysteroscopy and Dilation and Curettage (D&C) for diagnostic and therapeutic purposes.
• Removal of abnormal or symptomatic ovarian findings, such as cysts, while preserving the remaining ovary.
• Oophorectomy (removal of ovaries) in cases of abnormalities or preventively when indicated.
• Myomectomy (removal of uterine fibroids) while preserving the uterus.
• Conservative treatment of fibroids: either medication or embolization performed by radiology specialists.
• Hysterectomy with or without removal of the cervix.
• Diagnosis and clarification of unclear findings in the cervix, vagina, and vulva.
• Dysplasia treatment.
• Endometriosis management.
• Cancer treatment for vulvar, vaginal, cervical, uterine, and ovarian cancers.
• Treatment for incontinence and/or pelvic organ prolapse.

Whenever possible, we offer all procedures as minimally invasive treatments using laparoscopy or the Da Vinci robotic system.