Mustafa Ondzhel
- 4.6 Excellent • 472 reviews
- 23 years of experience
- Turkey, Istanbul, Medipol Mega University Hospital
Professor of oncosurgery and proctology
Professor of oncosurgery and proctology
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.
Dr. Klaus Kaczirek is a senior physician at the University Clinic for Surgery, Medical University of Vienna. He specializes in general and visceral surgery. He is known for his skill in hepatobiliopancreatic, oncological visceral, and endocrine surgery. His main focus is on complex operations involving the liver, pancreas, gastrointestinal tract, and endocrine organs.
Dr. Kaczirek holds board certifications in both general and visceral surgery. Since 2008, he has led the liver, gallbladder, and pancreas working group at the Austrian Society for Surgical Oncology. He is a member of the Austrian Society for Surgery, the European Society of Endocrine Surgeons, and other international surgical organizations. Dr. Kaczirek also reviews articles for leading medical journals and has helped advance surgical oncology and endocrine surgery.
Fields of Study and Interests
Breast Cancer
Lung Cancer
Colon Cancer
Stomach Cancer
Rectum Cancer
Ovarian Cancer
Uterine Cancer
Liver Cancer
Esophageal Cancer - Esophagus Cancer
Kidney Cancer
Larynx Cancer - Throat Cancer
Thyroid Cancer
Head and Neck Cancers
Gynecological Cancers
Pancreatic Cancer
Esophageal Cancer - Esophagus Cancer
Uterine Cancer
Brain Cancers - Brain Tumors
Soft Tissue Cancer - Sarcomas
Prostate Cancer
Bladder Cancer
Bile Duct Cancer
Testicular Cancer
Cervical Cancer
Mouth, Tongue, Lip Cancers
Gastrointestinal System Cancers
Bone Tumors
Trachea and Bronchial Cancers
Skin Cancers - Skin Cancers
Skeletal System Tumors
Gallbladder Cancer
Mesothelioma
Education
Cumhuriyet University Faculty of Medicine, 2004
Istanbul Haydarpaşa Education and Research Hospital Internal Medicine Specialist, 2010
Karadeniz Technical University Faculty of Medicine Medical Oncology Specialist, 2015
Career
MD Andeson Cancer Center, USA, 2008
Sunnybrook Odette Cancer Center Breast Cancer Clinic, Canada, 2017
Moffit Cancer Center, USA 2022
Istanbul Haydarpaşa Education and Research Hospital Internal Medicine, 2010
İdil State Hospital Internal Medicine Clinic, 2011
Karadeniz Technical University Faculty of Medicine Medical Oncology Clinic, 2015
Istanbul Göztepe Education and Research Hospital Medical Oncology Clinic, 2018
Yeniyüzyıl University Gaziosmanpaşa Hospital Medical Oncology Clinic, 2020
Ataşehir Medicana Hospital, Medical Oncology Clinic, 2022
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. Inta Jaunalksne is an experienced immunologist with more than 30 years in the field. She specializes in virotherapy. She graduated from Riga Medical Institute and completed an internship in Internal Medicine. Dr. Jaunalksne is recognized as an expert in immunology.
She leads the Clinical Immunology Center at Pauls Stradins Clinical University Hospital. Dr. Jaunalksne has played a key role in advancing virotherapy and immunological research. Her work has improved treatment results and introduced new therapies. She is well respected in clinical immunology.
Education
Experience
Dr. Ercan Ozden is a specialist in internal medicine and medical oncology. He earned his medical degree and completed his residency at Istanbul University, Cerrahpaşa Faculty of Medicine. He later received a subspecialty in medical oncology at Kocaeli University Faculty of Medicine from 2016 to 2020.
Dr. Ozden has worked in medical oncology at Şırnak State Hospital. He has also served as an internal medicine specialist at Bağcılar Private Safa Hospital and Küçükçekmece Batı Bahat Hospital. He has extensive clinical experience in both internal medicine and oncology.
Education
Career
Specializations
Cancer Surgery
Pancreatic Surgery
Bile Duct Surgery
Bariatric Metabolic Surgery
Oncological Surgery
Breast Surgery
Gastric cancer
Colon cancer
Thyroid Cancer
Obesity Surgery
Diabetes Surgeries
Education
Ondokuz Mayıs University Faculty of Medicine (1991)
KTÜ Faculty of Medicine Farabi Hospital (Specialization.1998)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Surgery Training, 2002)
Istanbul University Çapa Faculty of Medicine (Laparoscopic Antireflux Surgery Training, 2006)
Istanbul University Cerrahpaşa Faculty of Medicine (General Surgery Clinic Advance Laparoscopic Surgery, Laparoscopic Bariatric Surgery, Morbid Obesity and Oncological Cancer Surgery Training, 2010i)
Dr. Leng Yin is an experienced oncologist, specializing in liver, gallbladder, stomach, pancreas, intestinal tracts and breast treatments. She has worked in Fuda Hospital, Bumrungrad International Hospital and Royal Siriraj Hospital and is a member of The Chinese Anti-Cancer Association.