# 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.

- **Founded:** 2021
- **Headquarters:** Austin, Texas, United States
- **Founders:** Jonathan Swerdlin (Co-Founder & CEO), Mark Hyman (Co-Founder & Chief Medical Officer), Pranitha Patil (Co-Founder & Chief Business Officer), Seth Weisfeld (Co-Founder & Chief Design Officer), Daniel Swerdlin (Co-Founder & General Counsel), Mike Nemke (Co-Founder)
- **Team size:** ~420 employees (per source data; Wikipedia lists a smaller core team)
- **Products:** Function Membership, Full Body MRI, Medical Intelligence Lab, AI Health Reports & Dashboard, AI Assistant Integrations
- **Notable:** Named to TIME's Most Influential Companies of 2025, Reached a $2.5B valuation with a $298M Series B in November 2025, Grew to 100,000+ members with a ~200,000-person waitlist by 2024

## Products & services

- **Function Membership** — Annual membership giving members access to 100+ lab tests across heart, thyroid, hormones, metabolic health, nutrients, inflammation, and cancer and fertility markers, delivered through two Quest Diagnostics blood draws a year with clinician-reviewed, easy-to-read results.
- **Full Body MRI** — A 22-minute full-body MRI scan (via the Ezra acquisition) priced at $499, designed to screen for early signs of cancer, aneurysms, and other silent conditions before symptoms appear.
- **Medical Intelligence Lab** — A HIPAA-aligned generative AI system that reads a member's labs, imaging, wearables, and records to deliver personalized, plain-language health insights.
- **AI Health Reports & Dashboard** — Personalized reports and a longitudinal dashboard that explain each biomarker, flag out-of-range results, and recommend next steps and retests.
- **AI Assistant Integrations** — Connectors that let members access their Function results through ChatGPT (OpenAI), Claude (Anthropic), Perplexity, and Microsoft Copilot.

## Achievements

- Named to TIME's Most Influential Companies of 2025
- Reached a $2.5B valuation with a $298M Series B in November 2025
- Grew to 100,000+ members with a ~200,000-person waitlist by 2024
- Completed more than 3 million lab tests in 2023
- Acquired Ezra and cut the full-body MRI price from ~$1,500 to $499
- Backed by celebrity investors including Matt Damon, Pedro Pascal, and Kevin Hart

## Latest updates

- **2025-11** — Closed a $298M Series B led by Redpoint Ventures at a $2.5B valuation and launched the Medical Intelligence Lab AI effort.
- **2025-06** — Named to TIME's Most Influential Companies of 2025.
- **2025-05** — Acquired full-body MRI company Ezra and introduced a 22-minute, $499 full-body MRI scan.
- **2026-01** — Rolled out integrations letting members access their health data through ChatGPT and Claude.

## Links

- Website: https://www.functionhealth.com
- LinkedIn: https://www.linkedin.com/company/functionhealth
- Twitter/X: https://x.com/function
- YouTube: https://www.youtube.com/@functionhealth
- Instagram: https://www.instagram.com/function/
- Facebook: https://www.facebook.com/askfunction/
- TikTok: https://www.tiktok.com/@function

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Profile page: https://yespress.io/function-health
Published by YesPress — https://yespress.io
Last updated: 2026-07-21