Function Health vs Doximity
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $298M Series B (Nov 2025) at $2.5B valuation. Largest-ever longevity raise. 160+ lab tests + full-body MRI. Medical Intelligence AI model launched.
About
Function Health is a consumer preventive diagnostics company offering 160+ laboratory tests plus a $499 full-body MRI scan, all direct-to-consumer with AI-powered health intelligence layered on top. The company raised $298 million in Series B financing in November 2025 at a $2.5 billion valuation — the largest private fundraise in the longevity and preventive health space in history. The Medical Intelligence generative AI model, launched alongside the round, personalizes health guidance based on longitudinal biomarker data accumulated across repeat testing cycles.
Doximity (NYSE: DOCS), professional network for US physicians with 2M+ verified clinicians; telehealth, medical news, and career tools monetized via pharmaceutical digital marketing.
About
Doximity is a professional network and digital health platform purpose-built for licensed physicians and other healthcare professionals in the United States. With more than two million verified clinicians on the platform — representing the majority of practicing US physicians — Doximity has established itself as the dominant professional network for doctors, providing identity-verified peer connections, specialty-specific news feeds, medical journal access, and career management tools including a physician job board and CV builder. The verification layer distinguishes Doximity from general professional networks and makes it the standard reference for confirming physician credentials and contact information across the healthcare industry.
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