Former Numb3rs actress Diane Farr will appear on Grey's Anatomy this season, according to a show rep.
The 40-year-old actress will play a patient with Huntington's Disease under the care of Meredith (Ellen Pompeo). Farr is slated to appear in the fourth episode of the season, which will air sometime in October.
The casting was first reported by Entertainment Weekly.
Farr, also known for her work on Rescue Me, guest-starred in an episode of White Collar earlier this month.
Grey's Anatomy returns for its seventh season Thursday, Sept. 23 at 9/8c on ABC.