Berkowitz founded CID Entertainment in 2007, offering VIP tickets for bands and festivals. His first clients were Disco Biscuits, STS9, Umphrey's McGee and Govt. Mule. In the years since, he grew the business to become one of the leading experiential companies, working with premiere festivals like Coachella, Bonnaroo, ACL, Lollapalooza, Jazz Fest, Stagecoach and artists including Metallica, Yo Gabba Gabba, "Weird Al" Yankovic, Josh Groban, Phish, Dave Matthews, Dead and Company, Sturgill Simpson, Marc Anthony, Chris Stapleton, Luke Bryan and Lil Dicky. In 2015 Berkowitz launched CID Presents to organize artist-driven festivals in Mexico, including Luke Bryan's Crash my Playa, Dead and Company's Playing in the Sand and events for Phish, Dave Matthews Band, Bassnectar and Odesza.
In 2016 Berkowitz sold CID to Primesport, which was acquired a year later by OnLocation. In January, OnLocation was purchased by Endeavor in a deal valued at $660 million. Two months after the deal closed, the events business and much of the U.S. economy was shut down as the world went into quarantine in reaction to the coronavirus pandemic.
Berkowitz's position as chief executive will be filled by longtime CID employee Carey Archer, he wrote in an email to staff.
"I have worked closely with Carey for 12 years as he helped build the systems we all work in today, which contribute to our best in class service to our guests and partners," Berkowitz wrote. "Carey understands CID its core, and has been a great friend and partner. CID will emerge from this global crisis ready to do what we’ve always done best, helping to connect people to each other and the music that they love."