Klaus Kaczirek

Univ. Prof. Dr. Klaus Kaczirek is a leading Austrian endocrine and oncologic surgeon, internationally recognized for his expertise in thyroid, parathyroid, and adrenal gland surgery, as well as neuroendocrine tumors. With a career spanning more than three decades, he has played a key role in establishing Vienna as one of Europe’s foremost centers for endocrine surgery.

He studied medicine at the University of Vienna, where he graduated in the 1980s, and completed his residency in general and visceral surgery at the Medical University of Vienna. Early in his career, he focused on endocrine and metabolic disorders, developing refined surgical approaches for complex thyroid and adrenal diseases.

     1980s – Completed medical studies and began residency in general and visceral surgery.

     1990s – Specialized in endocrine surgery, performing thyroidectomy, parathyroid surgery, and adrenal gland resections.

     2000s – Appointed Professor of Surgery at the Medical University of Vienna, contributing to research in neuroendocrine and thyroid malignancies.

     2010s – Served as Deputy Head of the Department of General Surgery at Vienna General Hospital (AKH), leading clinical innovation and education in endocrine and oncologic surgery.

     Today – Practices as senior consultant at Wiener Privatklinik and the Medical University of Vienna, focusing on endocrine tumors, hormone-producing cancers, and advanced laparoscopic endocrine surgery.

Prof. Kaczirek has published extensively on endocrine tumor biology, minimally invasive surgery, and long-term outcomes of thyroid and adrenal operations, contributing to the development of international treatment standards. He is also actively involved in clinical trials and medical education, mentoring young surgeons in Vienna and abroad.

Renowned for his technical mastery, diagnostic precision, and empathetic approach, Prof. Kaczirek combines surgical innovation with academic rigor. His work continues to shape the evolution of endocrine oncology and metabolic surgery, setting new benchmarks in safety, precision, and patient-centered care.