[1] Her first on-screen appearance was a role as Grunge Girl in the episode "Team Play" of CBS's medical drama television series Chicago Hope.
[2] In 1999, she appeared in several guest starring television roles, including Buffy the Vampire Slayer, ER, Felicity, Popular and Wasteland.
She has also appeared in films All the Boys Love Mandy Lane (2006), Over Her Dead Body (2008), He's Just Not That Into You (2009), Gabi on the Roof in July (2010) and Ceremony (2010).
She also had roles in television series Jack & Bobby, Everwood, JAG, In Justice, Good Wife, In Plain Sight, Law & Order, Carpoolers, Person of Interest and The New Normal.
[7] In 2015, Bloom won an Obie Award, presented by the American Theatre Wing, for her performance in the off-Broadway play You Got Older, written by Clare Barron.