Former Numb3rs extra Diane Farr will arise on Grey's Anatomy this season, according to a appearance rep.

The 40-year-old extra will play a accommodating with Huntington's Disease beneath the affliction of Meredith (Ellen Pompeo). Farr is slated to arise in the fourth adventure of the season, which will air ancient in October.

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The casting was aboriginal appear by Entertainment Weekly.

Farr, aswell accepted for her plan on Rescue Me, guest-starred in an adventure of White Collar beforehand this month.

Grey's Anatomy allotment for its seventh division Thursday, Sept. 23 at 9/8c on ABC.