Principal Investigator, The Blackwell Lab at the Joslin Diabetes Center

President and CEO of Stanford Hospital & Clinic

General Partner, Foundation Capital

Assistant Managing Editor, Forbes

Founder, Longevity Fund

Director, USC Longevity Institute

Managing Director, General Catalyst Partners

Founder and CEO, ExploraMed

Managing Director, Interwest Ventures

Executive Director – Mprize, Methuselah Foundation