Kate Walsh Dr. Addison Montgomery Actor Tim Daly Dr. Pete Wilder Actor Audra McDonald Dr. Naomi Bennett Actor Paul Adelstein Dr. Cooper Freedman Actor Kadee Strickland Dr. Charlotte King Actor Christopher Lowell William "Dell" Parker Actor Taye Diggs Dr. Sam Bennett Actor Amy Brenneman Dr. Violet Turner Actor Jayne Brook Dr. Meg Porter Guest Star Ming-Na Wen Kara Wei Guest Star GeffriMaya Maya Bennett Guest Star Erin Way Jenna Guest Star Jack Briggs Nick Guest Star David Sutcliffe Officer Kevin Nelson Guest Star JF Davis Garry Guest Star Phoebe Holston Clerk Guest Star Paul Keeley Corporate Guy Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Lauren Schmidt Hissrich Writer Michael Zinberg Director