One of the best cancer specialists in Europe, educator, and cancer researcher, President of the Central European Cooperative Oncology Group (CECOG).
Has published over 600 scientific papers on cancer treatment.
Dr. Azmi Hamzaoglu is a leading spine surgeon with 36 years of experience in orthopedics and traumatology. He founded the Istanbul Scoliosis and Spine Center, the first facility in Turkey focused on spine surgery.
Dr. Hamzaoglu has performed thousands of complex surgeries, such as discectomy, kyphoplasty, scoliosis correction, and anterior cervical discectomy and fusion. He is known for developing new surgical techniques and has played a key role in improving spine care in Turkey.
He is a member of the Turkish Medical Association. He has also held important academic and clinical leadership positions, showing his dedication to high standards and patient care in spine surgery.
Dr. Krzesimir Sieczych is a specialist in orthopedics and musculoskeletal trauma. He focuses on treating overload injuries. He graduated from the Medical University of Warsaw. Since 2007, he has worked at the Carolina Medical Center.
Dr. Sieczych became a certified specialist in 2019. He has a strong background in surgery but prefers minimally invasive treatments. He uses advanced therapies such as hyaluronic acid, platelet-rich plasma, and Orthokine injections. His goal is to reduce the need for surgery and help patients recover faster.
I am a specialist in neurosurgery, a graduate of the Faculty of Medicine at the Medical University, a certified instructor of endoscopic spine surgery. I specialize in surgical treatment of brain and spine diseases, as well as in interventional pain treatment. I completed my specialization training in neurosurgery at the Department of Neurosurgery of the Medical University of Warsaw and at the Department of Neurosurgery of the CMKP in Warsaw. I have performed over 2500 surgeries on my own. I speak Polish, German, Russian and English.
I have special experience in the surgery of brain tumors - gliomas and tumors of the base of the skull. I also treat cervical, thoracic and lumbar discopathies with the use of classical (open) approach and with the use of endoscopic spinal surgery. I also deal with instrumental stabilization of the spine, insertion of artificial discs, apical-occipital decompression in Chiari syndrome, as well as microvascular decompression in vascular and nervous conflicts (trigeminal neuralgia, hemifacial spasm), My scope of interests also includes cranial base surgeries - interdisciplinary endoscopic surgeries with laryngological syndrome, hemangiomas and aneurysms of the brain (ruptured and unruptured, classic and endovascular surgeries - experience unique among neurosurgeons), spinal hemangiomas, endoscopic treatment of hydrocephalus and spinal cysts. In addition, I deal with interventional pain treatment by performing blockades of the spine, intervertebral joints, ganglia, peripheral nerves under X-ray or ultrasound control, thermolesion as well as implantation of spinal stimulators
Dr. Harald Rosen is a leading abdominal surgeon. He specializes in endocrine, gastrointestinal, liver, colon, and bariatric surgeries. His expertise includes complex procedures such as sleeve gastrectomy and gastric anastomosis. Dr. Rosen is known for his research on improving the quality of life for rectal cancer patients after surgery. He also has a strong academic background in surgical oncology, with a focus on gastroenterology and breast cancer.
Dr. Rosen is President of the European Society of Surgery. He is also a Professor of Surgery at Vienna Medical School. He is accredited by the European Council for Surgical Qualifications and the Austrian Medical Council. Dr. Rosen has performed over 5,000 advanced surgeries with excellent results. He has published widely and is often invited as a visiting professor around the world.
Dr. Nejat Akalan is a leading neurosurgeon specializing in brain and nerve surgeries, with over 35 years of experience. His areas of expertise include epilepsy, glioma, skull injuries, movement disorders, spine tumors, herniations, and other nervous disorders. He uses advanced techniques in his surgeries and has published 117 scientific papers and a book.
Education:
Medical Faculty, Trakya University,
Edirne, Turkey (1994-2000)
Professional Experience:
General Practitioner and Emergency Physician
Bartın (2000-2004)
Specialization:
Department of Neurosurgery, S.B. Göztepe Training and Research Hospital,
Istanbul (2004-2010)
Participation in the Accreditation Process by the European Association of Neurosurgical Societies (EANS) during
Specialization (2004-2010)
Completion of Compulsory Service as Specialist Physician
Tokat State Hospital, Tokat (2010-2012)
Assistant Professor, Department of Neurosurgery
Gaziosmanpaşa University, Tokat (2012-2014)
Contribution to the Establishment of the Department of Neurosurgery at Medipol University
(2012-2014)
Lecturer
Medipol University, Istanbul (2012-2014)
Specialist Physician
Memorial Istanbul Hospitals, Istanbul (2014-2018)
Lecturer, Faculty of Health Sciences
Eurasia University, Istanbul (2014-2021)
Associate Professor in the field of Neurosurgery (2021- )
Specialist Physician
Acıbadem Maslak Hospital, Istanbul (2018-2021)
Specialist Physician
Liv Hospital Ulus, Istanbul (2021-2023)
2023 –
Istanbul Florence Nightingale Hospital, Istanbul
Skills and Achievements:
Obtained Associate Professorship in the field of Neurosurgery (2021)
Experience in Academic Teaching and Management (2012-2021)
Proficiency in Turkish (Native) and English (Advanced)
Professor Dan Grisaro is a leading Israeli specialist in gynecological cancer diagnosis and treatment, specializing in ovarian cancer, uterine cancer, and cervical cancer. He has senior physician, head of department and lecturer experience at various medical centers and universities. He has held 39 presentations and is the author of 83 published scientific articles, and is a member of various professional societies.
Priv. Doz. Dr. Peter J. Bock is a leading orthopedic surgeon. He earned his doctorate in 1998. Dr. Bock has performed over 5,000 surgeries. He specializes in orthopedics and orthopedic surgery. His main focus areas are arthroscopic ankle and foot procedures, hallux valgus correction, cartilage repair, and ankle instability.
Dr. Bock was Senior Consultant and Head of the Foot Surgery Department at Speising Orthopedic Hospital. He is known for his expertise and many published articles. Dr. Bock speaks German, English, French, and Spanish.
Dr. Camel Kopty is a specialist in internal medicine, gastroenterology, endoscopy, and hepatology. He focuses on liver and pancreatic diseases, as well as bile duct disorders. He has performed more than 28,000 diagnostic and therapeutic endoscopic procedures. Dr. Kopty has strong experience in gastroscopy and colonoscopy.
He has received several awards and quality certificates in clinical endoscopy. His research in hepatology, including hepatitis B and C, has gained international recognition. Dr. Kopty has published many articles and received FDA research awards for his work.
Prof. Jack Baniel is a Professor of Urology and Chief of Urology section at Rabin Medical Center, Petach Tikva, Israel. He specializes in the reconstruction of the bladder, robotic prostatectomy, cancer surgeries with preservation of the nerve endings. He has published over 100 scientific articles and is actively involved in research in the field of uro-oncology. He is a graduate of Tel Aviv University and is a member of various professional organizations, including the Israeli Medical Association, the Israeli Association of Urology, the European Association of Urology, the European Organization for Research and Treatment of Cancer (EORTC), and the American Association of Urology.
Dr. Manfred Mühlbauer is a leading spinal neurosurgeon. He graduated from Vienna Medical University and now serves as a visiting professor there. He has more than 30 years of experience. His main focus is minimally invasive and reconstructive spinal neurosurgery. He also specializes in microsurgery for intervertebral disc hernias, vertebrostenosis, and stabilization procedures for spinal instability.
Dr. Mühlbauer is a board-certified neurosurgeon and intensive medicine specialist. He holds ECFMG certification and has completed international training in advanced spinal techniques. Since 1994, he has held senior roles in the neurosurgical department at Donauspital. In 2002, he joined the hospital’s board of directors. He is recognized for his scientific work and leadership in neurosurgery.
Dr. med. David Weidenauer is a Vienna-based specialist in internal medicine and cardiology. He studied medicine from 2007 to 2013. He completed specialist training in internal medicine and a subspecialty in cardiology.
He focuses on the prevention, diagnosis, and treatment of cardiovascular diseases. His areas include arrhythmias, hypertension, cardiomyopathies, coronary artery disease, and heart failure. He is experienced in echocardiography, Holter monitoring, and stress testing. He provides guideline-based therapies and offers preventive, patient-centered care at Wiener Privatklinik and associated centers.
Dr. Florian Fitzal is a senior physician at Vienna General Hospital and Vienna Medical University. He specializes in breast and abdominal surgery. He is a certified surgeon and holds a Master of Public Health (MBA). Dr. Fitzal leads the Breast Health Center. He also serves as Scientific Director of the Surgical Center of the Breast.
He is an auditor for the European Council of Surgeons. He is also a board member of the Austrian Breast Cancer and Colorectal Cancer Research Group. Dr. Fitzal has published over 143 scientific papers and has an h-index of 24. He has written four books on breast cancer surgery. He is known for his work in breast-conserving, oncoplastic, and reconstructive surgery.
Dr. Michael Matzner is an orthopedic surgeon based in Vienna. He has over 20 years of experience. He has been a certified specialist since 2001. He trained at the University Orthopedic Clinic of the Vienna General Hospital.
His expertise includes orthopedic and spine surgery, minimally invasive joint replacement, arthroscopy, treatment of osteoporosis and osteoarthritis, disc surgery, and fracture care. He practices at the Ordinationszentrum of Wiener Privatklinik. He provides musculoskeletal care with advanced surgical techniques and individualized plans. His focus is to restore mobility and improve quality of life.
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.
Dr. Alexander M. Rokitansky is a pediatric and adolescent surgeon and a pioneer of minimally invasive correction of pectus excavatum. He oversaw the creation of the pediatric surgery department at University Hospital Vienna from 1992 to 1994. He then led Pediatric and Adolescent Surgery at Klinik Donaustadt for 27 years, from 1994 to 2021. He chaired the Society for Pediatric Surgery and Intensive Care. He also led the Ludwig Boltzmann Institute of Pediatric Surgery and served as President of the Austrian Pediatric Surgery Society.
He earned his doctorate at the University of Vienna in 1982. He has been Professor of Pediatric and Adolescent Surgery at SFU Vienna since 2017. He has been Chief Surgeon at Vienna Private Clinic since 2021. Honors include an honorary doctorate from Carol Davila University (2012), honorary membership of the Austrian Society of Pediatric Surgery (2023), and the Golden Badge of Honor of the City of Vienna (2023).
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. Arye Blachar is a diagnostic radiologist with expertise in abdominal imaging, hepatic perfusion imaging, CT colonography, and body MR imaging. He focuses on imaging studies of the abdominal and pelvic organs. He has a special interest in diagnosing cancers of the liver, lung, prostate, stomach, adrenal glands, breast, and esophagus, as well as peritoneal mesothelioma.
Dr. Blachar has been recognized as one of the best teachers at Tel Aviv University Sackler School of Medicine. Forbes Israel named him one of the country's top physicians in 2021. His honors include a Certificate of Merit for research, Magna Cum Laude for his work on portal vein thrombosis, and an Editors’ Recognition Award from the European Radiology Journal.