Daniel Nadler started OpenEvidence to help physicians sort through a deluge of medical research. Now, he’s raised $210 million at a $3.5 billion valuation. Read the full story on Forbes: https://www.forbes.com/sites/amyfeldman/2025/07/15/this-ai-founder-became-a-billionaire-by-building-chatgpt-for-doctors/ Subscribe to FORBES: https://www.youtube.com/user/Forbes?sub_confirmation=1 Fuel your success with Forbes. Gain unlimited access to premium journalism, including breaking news, groundbreaking