Prof. Dr. Niklaus Schaefer is a triple board-certified physician, specializing in FMH Medical Oncology, Nuclear Medicine, and Internal Medicine. Currently serving as Chief Physician and Associate Professor at the University Hospital of Lausanne (CHUV), his exceptional leadership and expertise have earned him numerous accolades and prominent roles in the medical community. As the founder and Director of the Neuroendocrine Tumor Center at CHUV, certified as an ENETS European Center of Excellence, Dr. Niklaus Schaefer has significantly advanced theranostic oncology therapies. He is renowned for pioneering research, leading first-in-man clinical investigator-initiated oncology trials, earning international recognition and prestigious awards. Dr. Niklaus Schaefer's research has received over 11 million CHF in competitive external grants. Besides, he holds editorial responsibilities as an Associate Editor for the European Journal of Hybrid Imaging (Springer Open). Dr. Niklaus Schaefer also holds permanent memberships in the Federal Advisory Committee for Radiopharmaceuticals (Swissmedic) and the Federal Steering Committee for clinical audits (FOPH) at the national level. He is an board member of the Swiss National Society of Nuclear Medicine (SGNM), Deutsche Gesellschaft für Hämato-Onkologie (DGHO) and SwissNET for Neuroendocrine Tumors, shaping medical policies and standards. As a prolific speaker and faculty member at many international medical conferences and societies, Dr. Niklaus Schaefer actively shares his expertise in medical oncology, radiology, and nuclear medicine. He was also engaged in local area service as a counselor to serve his community. Dr. Niklaus Schaefer's dedication to excellence has made him a leading figure in theranostic oncology, leaving a lasting impact on patient care, medical research, and education, with numerous awards and substantial funding support underscoring his contributions on a global scale.