Justin Chambers

Chambers was born in Springfield, Ohio, on July 11, 1970, to Pamela Sue (Willman) and John William Eugene Chambers II, who were both deputy sheriffs. Chambers was raised in Springfield. He aspired to be a dentist. He has a fraternal twin brother, Jason; one older brother, John Jr. (Chip); and two older sisters, Mia and Susan. The twins were frequently hospitalized as children due to persistent bouts of pneumonia. He and Jason attended Southeastern High School in South Charleston, Ohio. Justin later moved to New York, where he studied for four years at HB Studio and Ron Stetson Studios.Chambers was discovered by a modelling scout on the Paris Metro and went on to star in advertising campaigns for Calvin Klein's fragrance range. He worked throughout Europe, Japan, and the United States for Calvin Klein, Armani, and Dolce & Gabbana. After deciding on an acting career, he relocated to New York City in the early 1990s, where he studied at the HB Studio. Studios and Ron Stetson Studios for four years.

His first major acting role was in the music video "Ants Marching" by Dave Matthews Band in 1995. He went on to land a few television roles, including a contract role as the original Nicholas Hudson in the NBC soap opera Another World, and New York Undercover. In 1998, he was cast as series regular in the short-lived CBS primetime soap opera Four Corners. Chambers has also appeared in several television movies, such as Harvest of Fire, Rose Hill, and Seasons of Love.

Chambers starred in several movies, notably Liberty Heights (1999, as Trey, alongside Adrien Brody), The Wedding Planner (2001, as Massimo, alongside Jennifer Lopez), The Musketeer (2001), Southern Belles (2005), The Zodiac (2005), and the HBO original movie Hysterical Blindness (2002). In 2003, Chambers was cast as one of the leads in the CBS crime drama Cold Case but left after appearing in only three of the show's first four episodes.

In August 2004, Chambers was cast as surgical intern Alex Karev in Shonda Rhimes's medical drama series Grey's Anatomy, opposite Ellen Pompeo, Sandra Oh, Katherine Heigl, and T. R. Knight. In 2006, along with other cast members, he was awarded a Screen Actors Guild Award for Outstanding Performance by an Ensemble in a Drama Series. In 2009, he also guest-starred on the Grey's Anatomy spin-off, Private Practice, for the Grey's Anatomy/Private Practice crossover event. On January 10, 2020, Chambers officially announced his departure from Grey's Anatomy and that his final episode had aired on November 14, 2019, with a farewell episode airing on March 5, 2020.

In 2022, Chambers played Hollywood icon Marlon Brando in the Paramount+ series The Offer, a biographical drama about the making of the classic film, The Godfather.