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.