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Function Health
Function Health is an Austin-based membership platform that gives consumers direct access to 100-plus lab tests, optional full-body MRI scans, and AI-generated insights for a flat annual fee. Founded in 2021 and led by CEO Jonathan Swerdlin with physician co-founder Mark Hyman, the company sells a data-first, preventive approach to healthcare aimed at helping members catch problems early and track their biology over time. After a $298M Series B in November 2025 at a $2.5B valuation, Function has become one of the fastest-growing consumer health companies in the US.
Jonathan Swerdlin
Jonathan Swerdlin is the co-founder and CEO of Function Health, an Austin-based membership platform that gives consumers direct access to comprehensive lab testing and AI-generated reports. A serial entrepreneur and investor who previously built and chaired Thinx and founded the video app Portal, Swerdlin has advised or backed more than 100 companies through his firm Wisdom VC. Since launching Function in 2023, he has grown it to hundreds of thousands of paying members, raised a $298M Series B at a $2.5B valuation, and drawn backing from Andreessen Horowitz and celebrity investors including Matt Damon and Kevin Hart. Goldman Sachs named him one of its Most Exceptional Entrepreneurs of 2025.