[1] He was formerly the President and Chief Executive Officer for 30 years of Legal Sea Foods,[3] a Boston-based restaurant group along the northeast of the United States, before selling the family-owned business in 2020.

He started working in the Legal Sea Foods fish market in the Inman Square section of Cambridge, Massachusetts at the age of ten and held a variety of roles before becoming President and CEO in 1992.

[13] Berkowitz was named a semifinalist of the James Beard Foundation Award for Outstanding Restaurateur for the years 2009 - 2012,[9] and was an inductee in the Nation's Restaurant News Menu Masters Hall of Fame in 2008.

[16] Between 2016-17, Berkowitz hosted a monthly television show on New England Cable News with his co-host, Larry Gulko, called “Inside the Brand".

[20] In his 2015 ad campaign, he ran as a faux candidate in the 2016 presidential election asking people to #feeltheberk and vote for him on the foundation of legalizing sea weed and other viewpoints.

[21] In 2011, Berkowitz criticized the placement of several species of fish on the "avoid" list of the advocacy group, Seafood Watch, saying that much of the science around sustainable fisheries was "flawed" and "outdated.