Raised $700M across disclosed rounds.[1][2][3][4][5][6][7][12]

Series D closed January 2026, led by Thrive Capital.[1][2][3][4][5][6][7][12]

post-money valuation is not publicly disclosed.

Named investors include Thrive Capital, DST Global, Sequoia Capital, GV (Google Ventures), NVIDIA, Kleiner Perkins, Blackstone, Coatue, Craft Ventures, Mayo Clinic, BOND, Conviction, ICONIQ, Greycroft, Breyer Capital, Goanna, Meritech, Alkeon, Henry Kravis.[1][2][3][4][5][6][7][12]

Daniel Nadler, CEO[1][2][11][14]

Zachary Ziegler, Co-founder[1][2]

Laurent Schockmel, Strategic Advisor To The CEO[11][14]

OpenAI (ChatGPT Health) · openai.com · Same buyer (physicians) and same workflow (clinical question answering), but trained on the open internet and aimed at consumers rather than doctors.[1][3]

Anthropic (Claude for Healthcare) · anthropic.com · Same buyer (healthcare providers) and same workflow (clinical decision support), but broader target audience including patients and payers.[1][3]

WebMD · webmd.com · Analogous product concept (medical information platform) but WebMD is consumer-facing while OpenEvidence is doctor-facing.[3]

The customer proof is company-sourced only. No independent source in this ledger confirms it.[9]

Ask for one referenceable production customer.

Not a recommendation. The first thing this ledger cannot answer.

Filled in the side panel for invited readers. This card carries sourced facts only.