News Brief

Doximity, a rapidly growing social network for doctors, has closed a $54 million fundraising round. The San Mateo, Calif., company, which has raised $81 million to date, tripled its users since fall 2012. Doximity said that more than one in three U.S. doctors are now members of the service, which is part professional network and part collaboration tool. DFJ, T. Rowe Price Associates and Morgan Stanley Investment Management all participated in the round.