Charlie Barnett (born February 4, 1988) is an American actor from Sarasota, Florida. He starred as Peter Mills, a firefighter/paramedic on the NBC drama Chicago Fire from 2012 to 2015. Currently, he stars as Alan Zaveri on the Netflix comedy series Russian Doll. He starred as Ben Marshall on the Netflix series Tales of the City. Recently, he starred as Gabe Miranda in the Netflix thriller series You.