Jeff Tangney was in the right place at the right time.

It was the year 2000, and Tangney, a statistical programmer, was furthering his education at the Stanford Graduate School of Business. His roommates were medical residents at the "steep end of their learning curve," as Tangney tells it. Mobile phones didn't have the capabilities that they do today; no one had synthesized the world's medical knowledge in a pocket-friendly format.

Tangney watched his roommates leave for work each day with armfuls of books, until the innovative bunch decided that there had to be a better way. So they got to work building an app. Little did they imagine that their dorm-room project would eventually grow into Doximity, an information, networking and administrative support platform that today is worth more

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