Dietmar Berger, MD, PhD, serves as Gilead’s Chief Medical Officer, responsible for the company’s leading virology, oncology and inflammation pipeline, as well as its global development and medical affairs organizations. Together with the leadership team, he works to advance clinical development strategies and programs with the goals of changing the trajectory of disease and transforming care for patients and communities around the world.
Dietmar is a board-certified internist, hematologist and oncologist with more than 25 years of extensive experience in developing and delivering innovative medicines across a broad range of therapeutic areas. He joined Gilead in 2025 after serving as Senior Vice President and Global Head of Development at Sanofi, where he led clinical development for therapeutic areas that included immunology, hematology, oncology, neuroscience, rare diseases, diabetes and cardiovascular medicine. Prior to Sanofi, Dietmar served as Executive Vice President and Global Head of Research & Development at Atara Biotherapeutics, as well as development and medical affairs roles at Genentech, Bayer Healthcare Pharmaceuticals and Amgen. He is Professor of Medicine at the University of Freiburg Hospital in Freiburg, Germany.
He completed his medical training in Freiburg, Germany; Basel, Switzerland; and Chicago and holds a MD and PhD from the Albert-Ludwigs University School of Medicine.
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