Function was founded with a singular focus: empower you to live 100 healthy years.
A fulfilling life depends on health, and health depends on awareness. You are the source of your truth and we are here to enrich you with the deepest awareness of what is happening within you. We start by bringing together routine whole-body lab testing, advanced imaging, and the world’s top doctors. It is our first step in helping you pursue a lifetime of avoiding disease and feeling your best.
Across the Function team, we have each had health challenges shape our lives. We’ve experienced healthcare’s shortcomings juxtaposed with the brilliance of medicine. It inspires us to remove complexity, place exponential health technology in your hands, and put privacy first. Our unwavering commitment is to empower you to own your ever-changing health. Function is all about you.
Welcome to your health.
Awards
Partnerships
Built with the world's
top doctors
Former Cleveland Clinic physician. CMO of Function Health.
Chief of Preventive Medicine at Brigham & Women’s Hospital. Professor at Harvard
Professor of Neurobiology at Stanford School of Medicine
Former CEO of Cleveland Clinic. Top heart surgeon.
Chief of Innovation at NYU Langone. Pioneer of AI-driven MRI.
Top medical oncologist. Professor at Columbia University.
Professor & Chair of Neurological Surgery at UCSF.
Head of the Division of Solid Tumor Oncology at Memorial Sloan Kettering Cancer Center.
Chair of the Department of Emergency Medicine at Lenox Hill Hospital.
Internist, entrepreneur, and health policy thought leader.
Gold standard
for lab testing
2,000+ lab test locations across the US
50+ million results delivered to Function members
Mission-first leadership
Co-Founder and Chief Business Officer
Left Harvard graduate school early to build Function. Formerly with Accenture Health Strategy. A lifelong vegan focused on managing PCOS and high cholesterol, she’s proud to have brought her pre-diabetic blood sugar back to normal.
“We created Function to jumpstart health for you and your family. It’s done that for me.”
Co-Founder and CEO
Serial healthcare entrepreneur and investor. Managing a lifelong neurological condition by balancing nutrient biomarkers instead of relying on medication. Reducing unusually high mercury levels. Bringing lipid particle sizes into an optimal range.
“My family and I are Function members. We are building this with our loved ones in mind. We want them to be their healthiest and stick around. Everyone deserves that.”
Co-Founder and Chief Medical Officer
Former Cleveland Clinic physician. 15x NY Times best-selling author. Spent years battling heavy metal toxicity and broad dysfunction. Learned to heal himself, inspiring a career pioneering new frontiers of medicine.
“I wish I could see millions of patients. We are building Function to democratize so much of what I do and give you the keys to own your health. It is the most powerful approach to health I’ve seen in my career as a doctor.”
Co-Founder and Chief Design Officer
Seth is a product design leader with over 20 years of experience in UX, strategy, and building zero-to-one products that define new categories. Having managed autoimmune-driven inflammation and colitis throughout his life, he’s deeply committed to using testing and data to optimize health through nutrition and lifestyle.
“The user experience of healthcare—and people’s ability to actively course-correct their health—lags behind other industries. Function is changing that, enabling everyone to live their best life.”
Co-Founder & General Counsel
Founder of a law firm helping organizations navigate complex legal challenges so they can maximize social impact. J.D. from Stanford Law School. Focused on reducing inflammation, managing stress, and improving cardiovascular health.
“Knowledge is power. Health is wealth. It’s an honor to help people make the most of their lives.”
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Chief Operating Officer
Neil brings nearly two decades of experience scaling world-class teams. Most recently, he served as COO at Slack, following a senior leadership role at Twitter.
“As my kids grow up, there’s nothing more important than staying healthy. Function empowers me to do that.”
Chief Medical Scientist
Pioneer in medical AI and inventor of parallel MRI - a technology which has helped to guide the care of billions of people around the world. Former Chief of Innovation in Radiology at NYU, former president of the International Society for Magnetic Resonance in Medicine, and author of The Future of Seeing, he believes that healthcare in the future will be personalized, predictive, and protective.
"After a long career in academic medicine and medical technology development, I joined Function because I’m tired of chasing after symptoms and treating disease after the fact. I want to build a future of proactive health for everyone, everywhere."
CEO, Ezra
Software engineer and serial entrepreneur on a mission to detect cancer early for everyone in the world. He founded Ezra after witnessing his mother's battle with a cancer that was diagnosed too late. Passionate about using AI to transform healthcare and advance longevity science.
"I believe we can make cancer non-lethal in our lifetime. Bringing Function and Ezra together is an important step toward that ambition, and I couldn't be more excited about what the future holds."
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Senior Vice President, People
Libby brings over 18 years of HR leadership experience, partnering with executives to build high-performing, people-first organizations that scale with purpose and impact.
“I joined Function because I want my three kids to have the chance at the longest, healthiest lives possible—and I want to be there for all of it. That’s what drives me every day.”
Chief Medical Officer, Ezra
Triple board-certified physician leader in Internal Medicine, Allergy and Immunology, and Integrative/Holistic Medicine. Stanford, UPenn, and Harvard trained, she has served at the U.S. Department of Health and Human Services on Vice President Al Gore’s National Performance Review and World Trade Center 9/11 Program. She is dedicated to advancing whole-person, personalized care through innovation.
"As someone who has been profoundly impacted by cancer personally and professionally, I want to provide everyone with more tools to be proactive about their health and do it in a responsible way that empowers patients and providers to find cancer and critical disease early."
Women's Health Medical Director
As a board certified integrative medicine physician and clinical educator, she has helped thousands of women decode their bodies and advocate for themselves over the past two decades. Former Medical Director at Parsley Health and Founder of Minimalist Medicine, she blends clinical expertise, modern diagnostics, and culturally informed care to redefine proactive health for all women.
"After years of watching women suffer in silence and their symptoms dismissed as normal, I joined Function to build the future I wish existed now. One where women can see their bodies clearly, catch disease decades earlier, and live longer, healthier lives - with agency, data, and support."
An unprecedented career move
An unprecedented career move
Function is a mission. We are building a world where living 100 healthy years isn’t the exception—it’s the expectation. Join our team to push boundaries and transform lives, starting with your own. Perks and benefits include:
- Function membership
- Fully remote
- Flexible PTO
- Competitive 401(k) match
- Comprehensive health insurance
