Peter Gallagher

Peter Killian Gallagher is an American actor. Since 1980, he has played roles in numerous Hollywood films. He is best known for starring as Sandy Cohen in the television drama series The O.C. from 2003 to 2007, recurring roles such as Deputy Chief William Dodds on Law & Order: Special Victims Unit, Stacey Koons on the Showtime comedy-drama Californication, and Nick on the Netflix series Grace & Frankie. He also played CIA Director of Clandestine Services Arthur Campbell on Covert Affairs.

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Julianna Margulies And Peter Gallagher Broadway Bound In New Play By ‘You’ve Got Mail’ Co-Screenwriter Delia Ephron

Peter Gallagher’s Kids: Meet His Son & Tony-Nominated Daughter

Kathryn Gallagher hits the red carpet with her actor father Peter Gallagher at the 2021 Tony Awards

Nominee Kathryn Gallagher Stuns on Tony Awards Red Carpet with Dad Peter Gallagher!

Peter Gallagher Joins 'Grey's Anatomy' Cast for Recurring Role in Season 18

The O.C.'s Peter Gallagher Joins Season 18 of Grey's Anatomy

Peter Gallagher is joining Grey's Anatomy for season 18 in a recurring role as Dr. Alan Hamilton

Peter Gallagher Joins 'Grey's Anatomy' for Season 18, Character Details Revealed

Peter Gallagher's Daughter Reveals What It's Really Like to Have The O.C.'s Sandy Cohen as a Dad

Mad Men's Jon Hamm reveals he auditioned for role on The O.C. made famous by Peter Gallagher