Baumgartner was born in Atlanta, Georgia, where he attended Holy Innocents' Episcopal School. He attended high school at The Westminster Schools in Atlanta with future Office co-star Ed Helms, who graduated one year later in 1992. He then attended SMU before moving to Los Angeles, Baumgartner served as Artistic Director of Hidden Theatre in Minneapolis, Minnesota, where he received multiple awards for artistic and acting excellence. In addition, Baumgartner performed regionally at the Guthrie Theater, Berkeley Repertory Theatre, Children's Theater Company, and Theatre de la Jeune Lune. Baumgartner studied acting at the Meadows School of the Arts at Southern Methodist University.
Baumgartner lives in Los Angeles and Hilton Head with his wife and daughter.
Baumgartner's television appearances include roles on Jake in Progress, Arrested Development and Everwood. He also acted as a talent scout on Last Comic Standing with his Office co-star Kate Flannery. He appears in the romantic comedy feature film License to Wed opposite Robin Williams, Mandy Moore, and Office co-star John Krasinski. In June 2007, Baumgartner won a Daytime Emmy Award for Outstanding Broadband Program - Comedy, for his work on The Office: Accountants webisodes. His co-stars Angela Kinsey and Oscar Nunez also shared the award.
On July 8, 2008, Baumgartner appeared with the rest of the cast of The Office on Celebrity Family Feud, in which his team triumphed over the American Gladiators team. He has also appeared on a college humor video series " turtle racing" on YouTube
|2003||The Lyon's Den||?||Episode "The Fifth"|
|CSI: Crime Scene Investigation||Dog Man (uncredited)||Episode "Fur and Loathing"|
|2005||Arrested Development||Gun Shop Owner|
|The Office||Kevin Malone|
|Jake in Progress||?|
|2007||License to Wed||Jim|
|Celebrity Family Feud||Himself||Baumgartner took on the role of captain, he and his team (other The Office cast members) contested so that they could donate $50,000 towards charity. They won and donated the money to Children’s Advocacy Center of Northeastern Pennsylvania.|
|2009||Into Temptation||Fr. Ralph O'Brien|
|2010||House of Good and Evil||Bob Bradley|