David Eigenberg

Sex and the City co-star David Eigenberg will guest-star in an upcoming episode of Private Practice, TVGuide.com has learned exclusively.

The 46-year-old actor, who portrayed Miranda's husband, Steve, on the HBO series, will play Frank, the husband of a patient of Addison's (Kate Walsh), who has an extremely unusual request.

Kate Walsh returning to Grey's Anatomy

Eigenberg, who most recently appeared in Justified and the Sex and the City sequel, will appear in Episode 16.

Private Practice returns with new episodes Thursday, Feb. 3 at 10/9c on ABC.