Karla Jurvetson  Karla Tinklenberg Jurvetson (born 1965/1966) is an American physician, philanthropist, and political organizer who lives in Silicon Valley. Jurvetson was born in New Haven, Connecticut, and she grew up in Palo Alto, California. She has a younger sister, Julie Tinklenberg Callan. Their mother is Mae Tinklenberg, a retired nurse, and their father is Jared Tinklenberg, a retired professor and physician. She earned a bachelor's degree in human biology with distinction and with honors from Stanford University (1988), a Medical Doctorate from the University of California (1993), and completed her psychiatry residency at Stanford (1997). Jurvetson works as a private practice physician in Los Altos, California. Jurvetson has been active in supporting causes both domestically and internationally, primarily related to the environment and education. Jurvetson served on the board of directors of Peninsula Open Space Trust from 2003 to 2006 and was a founding donor to Wildlife Conservation Network (2002 to present). After touring deforestation on the slopes of Mauna Kea in 2016, she sponsored the planting of 1,000 indigenous trees through the Hawaiian Legacy Reforestation Initiative. Jurvetson previously served on the school board of The Nueva School, which is located in the San Francisco Bay Area and was previously a kindergarten through 8th grade school. She co-chaired the school's $50 million capital campaign, which resulted in the construction of the San Mateo campus and the addition of a high school to Nueva (2011–2018). She has been a trustee on several other non-profit boards, including the San Francisco Ballet (2000-2003). She was named by Gentry Magazine as one of the top 50 philanthropists in the San Francisco Bay Area (2013, 2014) and by Silicon Valley Social Venture with the SV2 Social Impact Award (2014) and as part of the SV2 Visionary Leadership Circle (2018). As of 2019, Jurvetson is a supporter of the San Francisco Art Museum, a contributor to the Obama Foundation, and she serves on the Advisory Board of Stanford Center for Philanthropy and Civil Society, which focuses on "the way we use private resources for public benefit." Jurvetson is a supporter of the Jane Goodall Institute, Global Heritage Fund, Keep Girls in School Project, and One Acre Fund, which is dedicated to serving smallholder farmers in Africa.