Patrick Heusinger was born and raised in Jacksonville, Florida, where he attended Douglas Anderson School of the Arts. A graduate of Juilliard, Patrick made his debut in the 2005 independent period drama film Sweet Land, as young Lars, and then appeared in Tie a Yellow Ribbon, The Nanny Diaries, and Black Swan. He is best known for his television roles of Lord Marcus on the CW teen drama Gossip Girl, where he appeared on four episodes in 2008, and as Max in Girlfriends’ Guide to Divorce . Other television credits include Royal Pains, 30 Rock, The Good Wife, Law & Order: Special Victims Unit, Castle, Rescue Me, Unforgettable, and Necessary Roughness. In 2013, he had a guest-starring story arc on the NBC survival drama series Revolution as bounty hunter Adam. In 2015, he had a guest-starring role on the Hulu original series, Casual as Michael.

Patrick starred as Lancelot in the national tour of Spamalot from 2006 through 2008. In 2010, he starred in the Naked Angels’ Tony-nominated Broadway production of Next Fall. Other theater credits include the off-Broadway production of Next Fall and the Broadway revival of Fiddler on the Roof (as Fyedka).

In 2009, he appeared in the comedy web series Jack in a Box. In 2010 and 2011, he appeared in the comedy web series Submissions Only. In 2016 he had a role in Jack Reacher: Never Go Back, opposite Tom Cruise.