The longevity-focused telehealth platform co-founded by Dr. Mark Hyman is officially a unicorn. The new funding will power AI health features and allow Function to drop the price of its annual membership
Function Health is heading into the new year as a celebrity and athlete-backed unicorn, raising an oversubscribed $298 million Series B round at a $2.5 billion valuation and unveiling a “Medical Intelligence Lab” that introduces new AI features.
The longevity-focused telehealth platform is also lowering its annual membership to $365, down from $499. That move comes on the heels of new data from West Health and Gallup showing that cost and affordability are major barriers to Americans’ experiences with the healthcare system, even in states that rank highest for access and quality.
The lower price point also echoes what Function co-founder Dr. Mark Hyman emphasized last month ahead of his appearance at the Eudemonia Summit: proactive health only works if people can afford to participate.
“Proactive health has long been positioned as a luxury or an afterthought,” Dr. Hyman told Athletech News last month. “That needs to change — and it’s exactly why we built Function: to make advanced diagnostics both accessible and actionable for everyone. Everyone deserves the right to know what is happening in their body.”
Redpoint Ventures led the latest funding round, backed by an investor base that spans major venture funds, pro athletes and celebrities, including Matt Damon, Magic Johnson, Zac Efron, Roku founder Anthony Wood, HartBeat Ventures, Olympic gold medalist Ryan Murphy and more.
It’s been a rapid ascent for Function, which launched in beta in 2023 and began with waitlists for its health platform offering more than 100 lab tests and comprehensive insights based on bloodwork.
Earlier this year, Function expanded beyond lab testing with the acquisition of AI imaging startup Ezra, adding a $499 22-minute full-body MRI meant to catch cancers and other conditions earlier and more efficiently.
The funding will help fuel the MI Lab, where Function is working to turn AI into what it calls “medical intelligence,” a system built to capture the deepest possible view of each person’s biology by unifying data from lab tests, imaging, wearables, IoT devices and medical records, then layering it with global research and clinical expertise to spot early warning signals.
As the MI Lab ramps up, members will get early access to new AI tools, including a private AI chat where they can ask questions and receive responses informed by their own health data. They’ll also be able to upload past lab results, visit notes and scans into a secure vault that feeds both the chat and Function’s Protocols feature.
“This is bigger than any company or trend,” Function co-founder and CEO Jonathan Swerdlin said. “Function’s MI Lab and Medical Intelligence introduces a new chapter in human health. This is the most important application of AI — helping people avoid suffering and preventable death.”
Along with the funding news, Function has strengthened its leadership bench with the additions of parallel MRI inventor Dr. Daniel K. Sodickson as chief medical scientist and co-director of the MI Lab, Dr. Tiffany Lester as women’s health medical director and former Slack chief operating officer Neil Shah as chief operating officer.
“We’ve spent decades waiting until people are sick to act,” Dr. Sodickson said. “Function changes that. Medical Intelligence connects important signals — from blood to imaging to wearables — creating a continuously learning model of your health. It’s not AI replacing doctors; it’s clinical expertise amplified by intelligent systems that never stop learning.”
