Best PET/CT doctors in Vienna: TOP 7 doctors

Dr. David Kuczer is a specialist in radio-oncology with many years of experience in cancer diagnosis and treatment. He offers fast access to precise radiotherapy based on current scientific standards.

He is a member of the Cancer Center at the Vienna Private Clinic. He presents each patient to the in-house tumor board. This allows an interdisciplinary discussion by an internationally renowned team and helps select the best treatment.

All radiation treatments are provided in close cooperation with Amethyst Radiotherapy at the Vienna Private Clinic.

Dr. Christoph Zielinski is a prominent oncologist and Chairman of the Vienna Cancer Center. He serves as Medical Director of the International Oncology Center at Wiener Privatklinik. Dr. Zielinski specializes in immunotherapy and hematology. He has published over 600 scientific papers on individualized cancer treatment. Dr. Zielinski works at Wiener Privatklinik, a hospital ranked among the world's best by Newsweek.

• Certified by the European Society for Medical Oncology and ASCO.
• Former President of the Central European Cooperative Oncology Group.
• Specializes in personalized therapies for breast, lung, and pancreatic cancers.
• Founded the Comprehensive Cancer Center Vienna to integrate research and care.

The doctor is a distinguished Austrian specialist in gastroenterology, internal medicine, and endoscopic surgery, renowned for advanced diagnostic and therapeutic procedures on the digestive tract. With decades of experience, the doctor is a trusted expert in managing complex gastrointestinal and hepatobiliary diseases.

Graduating from the University of Vienna in the 1980s, the doctor specialized in gastroenterology and endoscopic techniques during the 1990s. By the 2000s, the doctor gained recognition for work in diagnostic and therapeutic endoscopy, including procedures like colon polyp removal and biliary interventions.

Currently, the doctor serves as a leading consultant at Wiener Privatklinik, performing endoscopic surgeries and managing complex gastrointestinal conditions.

Dr. Walter Klepetko is a thoracic surgeon at Wiener Privatklinik in Vienna. He heads the Department of Thoracic Surgery at the Medical University of Vienna. He performed one of Austria’s first lung transplants. Dr. Klepetko is a pioneer in thoracic oncology and complex transplantation medicine.

• Founded the Vienna Lung Transplant Program, performing over 100 transplants annually.
• Co-developed the surgical technique for extracorporeal membrane oxygenation (ECMO) in transplants.
• Led the surgical team for Formula 1 legend Niki Lauda’s lung transplant.
• Specializes in lobectomy, lung segmentectomy, and thymoma treatment.

Dr. Wolfgang Köstler is the Deputy Head of the Clinical Division of Oncology at the Medical University of Vienna. He specializes in personalized immunotherapy and targeted therapies for breast and gynecologic cancers. He serves as a senior consultant at Wiener Privatklinik in Austria. Dr. Köstler holds a degree in molecular biology from the Weizmann Institute of Science.

• Trained at Memorial Sloan-Kettering Cancer Center and Royal Prince Alfred Hospital.
• Former Head of the Oncology Department at Regional Hospital Wiener Neustadt.
• Treats complex sarcomas and urogenital tumors using individualized systemic therapy.
• Researches biomarker development and resistance mechanisms to improve treatment outcomes.

The doctor is a leading specialist in general, visceral, and oncologic surgery, with international recognition for expertise in esophageal and gastric cancer surgery. Specializing in minimally invasive and robotic techniques, the doctor has made significant contributions to translational cancer research, modernizing surgical oncology and improving patient outcomes across Europe.

Graduating from the University of Vienna in the 1990s, the doctor began a residency at Vienna General Hospital, focusing on esophageal cancer biology. By the 2010s, the doctor was appointed Professor of Surgery and Head of the Upper GI Surgery Unit at the Medical University of Vienna, introducing advanced surgical programs.

Currently, the doctor serves as a consultant at Wiener Privatklinik, with active involvement in upper GI oncology and laparoscopic surgery. The doctor has numerous international publications and is a member of several oncology and surgical societies.

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.