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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Peter Gallagher Talks Watching Costar Mischa Barton Navigate Fame During 'The O.C.'

Peter Gallagher Recalled Working With Mischa Barton On "The O.C.," And How He's Grateful She's "Still Alive"

Peter Gallagher Is 'So Grateful' That Mischa Barton Is 'Still Alive'

Peter Gallagher is grateful Mischa Barton is 'still alive' after dealing with 'toxic' fame as a teen star

The O.C.'s Peter Gallagher Reacts to TV Son Adam Brody's Renaissance

Peter Gallagher On ‘The OC’ TV Son Adam Brody’s ‘Nobody Wants This’ Success: “I’m Proud Of Him All The Time”

Peter Gallagher Gets Daughter Kathryn's Support at Opening Night of New Broadway Play with Julianna Margulies!

Peter Gallagher always took “The O.C.” seriously. Sandy Cohen was the dad of his dreams, too

Delia Ephron’s ‘Left On Tenth’ Starring Julianna Margulies And Peter Gallagher Sets Broadway Opening Date, Venue

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