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 Caterina Scorsone Dr. Amelia Shepherd Guest Star Brian Benben Dr. Sheldon Wallace Guest Star Bobby Coleman Oliver Guest Star Perrey Reeves Kelly Guest Star Ken Wilder Scott Guest Star Aaron Ashmore Carl Guest Star Camille Chen Lucia Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Jon Cowan Executive Producer Robert Rovner Executive Producer Patti Carr Writer Lara Olsen Writer Jeff Bleckner Director