David Eigenberg is an American actor. He is best known for his long-running role as Steve Brady on the HBO sitcom, "Sex and the City," and for his role as Lieutenant Christopher Herrmann on NBC's "Chicago Fire."

Eigenberg was born in Manhasset, New York, on Long Island, and grew up in Naperville, Illinois, the only boy in a family of six children. His father was Jewish and his mother was Episcopalian; he was raised in his mother's faith. After graduating from high school in 1982, Eigenberg enlisted in the United States Marine Corps Reserve, serving for three years (1982–1986), and was honorably discharged at the rank of Lance Corporal.

Eigenberg's first recurring role was on Homicide: Life on the Street, where he portrayed a copycat sniper, before acting in The Practice. He voiced the role of Nermal in Garfield: The Movie. He made an appearance on an episode of ER during the show's final season, and made an appearance in the movie Daybreak. He appeared in the American TV show The King of Queens, in the episode entitled "Flash Photography", where he portrayed the groom of Carrie's annoying friend.

In 2002, Eigenberg starred as the short-lived character Officer Ross in the Season 3 episode of "Third Watch," entitled "Superheroes: Part 1". In July 2004, he appeared in the sci-fi series "The 4400." He appeared as Carl Morrissey in part two of the pilot, entitled "The New and Improved Carl Morrissey". Eigenberg appeared as a suspect in the sixth episode of the TV series "Raines," entitled "Inner Child", which first aired on April 20, 2007. He also appeared in an episode of "Ghost Whisperer," alongside Jennifer Love Hewitt, and in CBS's "NCIS" as Ted Bankston, a former NSA analyst who was suspected of mishandling classified information, which was eventually proven to be true. Eigenberg had a recurring role in the HBO series "Sex and The City" as Steve Brady, Miranda Hobbs' on-and-off-again boyfriend and eventual husband.

In 2010, he appeared as Agent Russell Goldman in the Season 5 episode of "Criminal Minds," entitled "Parasite." In March 2011, he appeared in Season 3 of "Castle," in the episode "One Life to Lose," as Peter Connelly. In the fall of 2012, Eigenberg joined the cast of NBC's "Chicago Fire" as Lieutenant Christopher Herrmann.

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