Rosanna Arquette

Rosanna Arquette will guest-star on Private Practice, TVGuide.com has learned exclusively.

Watch full episodes of Private Practice

The 50-year-old actress — who appeared on another Shonda Rhimes program, Grey's Anatomy, as an inmate who jeopardized her health to evade solitary confinement — will be playing the bohemian mother of Dink (Stephen Lunsford), who happens to be Maya Bennett's new boyfriend. Maya is the daughter of Sam (Taye Diggs) and Naomi (Audra McDonald).

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Arquette, who recently guest-starred on two episodes of ABC's Eastwick, is scheduled to appear in one episode of Private Practice in early February.