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. For doctors trying to stay abreast of the latest medical breakthroughs, reviewing the latest research is like being shot in the face with a water cannon. A new paper is published every 30 seconds. Trying to comb through it all to come up with a diagnosis or treatment plan that reflects the best current options while seeing 20 patients a day i...