Barash was born in St. Louis, Missouri, and is the son of Jerry L. Barash, President and CEO of Sysco Food Services of Ventura and his first wife Susan Gale. He has one brother, Jordan B. Barash, and one sister, Alison L. Barash. His family is Jewish. Barash has lived in Missouri, Texas, and California. He graduated from Memorial High School in Houston, Texas in 1998.
From 2002 to 2004, Barash played Jamie, Paris Geller's boyfriend, in multiple episodes of The WB drama series Gilmore Girls.
Barash first appeared in the contract role of Johnny Zacchara on the ABC soap opera General Hospital in September 2007, and left in March 2013. He returned for several short stints from 2014 to 2016.
Barash was engaged to Actress Natalie Hall in 2011.
In August 2013, Barash and his former General Hospital co-star Kirsten Storms told People that they had secretly wed in June, and were expecting their first child, a girl, in January 2014. In January 2014, Barash confirmed on Twitter that Storms had given birth to a baby girl. In April 2016, Barash and Storms announced that they had filed for divorce after more than 2 and a half years of marriage, citing irreconcilable differences and saying the separation is amicable.
In 2015, Barash played Melrose Place actor Thomas Calabro in the Lifetime TV film The Unauthorized Mel Rose Place Story. He appeared in the recurring role of Detective Robby Oderno in multiple episodes of the TNT police procedural Major Crimes from 2014 to 2016. In 2017, Barash played Ernest Hemingway in the episode "The Lost Generation" of the NBC time travel TV series Timeless.
