Grey's Anatomy is adding Adina Porter to the roster of guest stars to appear on the season 9 comeback of the medical series. The news exclusively learned by TV Guide stated that 'The Newsroom' star will be playing as a doctor, but not among the Seattle Grace Hospital chain of commands. In lieu, she will represent one of the doctors from the Boise Hospital who will serve as the rescue team after the season 8 crash.
Furthermore, Porter will take the role of Dr. Ramsey who shall emerge on the second and flashback episode of season 9.
Source: TV Guide