She is known for her roles on ER, JAG, The Pretender, Less than Perfect, Desperate Housewives, and Pretty Little Liars.

In 1995, Parker was cast in Donald Bellisario's NBC series JAG as Kate Pike, the initial female lead for the two-part pilot.

She then returned to series television in 2002 and starred in the ABC comedy Less than Perfect, playing Lydia Weston until it was cancelled in 2006.

[1] She later starred in NBC drama pilot Beautiful People,[2] and joined the cast of ABC Family series Pretty Little Liars.

In February 2006, Parker attended a benefit with former Pretender co-stars Michael T. Weiss and James Denton for Cure Autism Now.