Hideki Garren is the Chief Medical Officer of Prothena. Before joining Prothena, Garren was with F. Hoffmann-La Roche & Genentech. Prior to Roche, he was the Executive Director and Translational Medicine Expert in Neuroscience with Novartis Pharma. He also served the Co-Founder, Executive Vice President, Chief Scientific Officer, and Chief Operating Officer of Bayhill Therapeutics. He serves as a director of Coya Therapeutics, a publicly traded biotechnology company.

Garren earned his Bachelor of Science from the California Institute of Technology and his MD and PhD from the University of California, Los Angeles (UCLA). He completed his internship in internal medicine at UCLA, and his residency in neurology and fellowship in neuroimmunology at Stanford University.