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 Justin Chambers Dr. Alex Karev Guest Star Chandra Wilson Dr. Miranda Bailey Guest Star James Pickens Jr. Dr. Richard Webber Guest Star Eric Dane Dr. Mark Sloan Guest Star Patrick Dempsey Dr. Derek Shepherd Guest Star Jennifer Westfeldt Jen Harmon Guest Star Ben Shenkman Rob Harmon Guest Star Abigail Spencer Rachel Guest Star Steven W. Bailey Joe Guest Star Grant Show Dr. Archer Forbes Montgomery Guest Star Jeffrey Nicholas Brown Andrew Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer, Director Jon Cowan Writer Robert Rovner Writer Krista Vernoff Writer Debora Cahn Writer