Jonathan Leff

Partner, Deerfield Management & Chairman of the Deerfield Institute

Jonathan Leff is a partner on the Private Transactions team at Deerfield Management and Chairman of the Deerfield Institute. He focuses on venture capital and structured investments in biotechnology and pharmaceuticals.

Prior to joining Deerfield, for more than sixteen years, Mr. Leff was with Warburg Pincus, where he led the firm’s investment efforts in biotechnology and pharmaceuticals. He is a member of the boards of several public and private healthcare companies as well as several not-for-profit boards, including the Spinal Muscular Atrophy Foundation, Friends of Cancer Research, the Reagan-Udall Foundation for the Food and Drug Administration and the Columbia University Medical Center Board of Advisors. He previously served as a member of the Executive Committee of the Board of the National Venture Capital Association (NVCA), where he led NVCA’s life sciences industry efforts as Chair of NVCA’s Medical Innovation and Competitiveness Coalition (NVCA-MedIC), and also previously served on the Board of the Biotechnology Innovation Organization.

Mr. Leff received his A.B. from Harvard University, and earned his M.B.A. from The Stanford Graduate School of Business.