The gateway to everything entrepreneurial at Cornell University

Join our eship listserve

Cornell Venture Capitalists

William Rosenzweig

BA '81

Managing Director
Physic Ventures (San Francisco, CA)


William B. Rosenzweig has spent twenty years integrating the practices and perspectives of an entrepreneur, venture investor and educator. Will is a co-founder and Managing Director of Physic Ventures, LP, an early-stage venture capital fund focused on health, wellness and sustainable living investments. The fund's investment scope and strategy synthesizes scientific and consumer disciplines: “Life Science meets Lifestyle”

Will has also served as Managing Director of Great Spirit Ventures, LLC a portfolio of health and wellness investments, and founding CEO of Brand New Brands Inc, a functional foods venture accelerator.

Will was co-founder and CEO of The Republic of Tea, an award-winning specialty tea company; Sr. Vice President of Odwalla, the nation's largest fresh juice company; Vice President of Nakamichi; Partner and CEO of Hambrecht Vineyards and Wineries, and Chairman of He has also played a role in the growing and financing Stonyfield Farms, Leapfrog, Putumayo and Trinity Springs. He also founded Kingdom of Herbs, a purveyor of organic products for home and garden at the Ferry Building in San Francisco.

Will was on the faculty at the Center for Responsible Business at the Haas School of Business at UC Berkeley where he taught the MBA course in Social Entrepreneurship from 1999-2006. He serves as advisor to the Global Social Venture Competition and has been a visiting faculty member at London Business School and a guest lecturer at Stanford, Columbia, USC and UCLA.

Will also served as an advisor and consultant to the Rockefeller Foundation's ProVenEx Fund, an investment vehicle seeking “double bottom line returns” in for-profit businesses. Will is the co-author of The Republic of Tea: How an Idea Becomes a Business (Doubleday 1992, 1994) a best selling book that chronicles the start up of a new company.