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 Ernie Hudson Captain Frank Guest Star Leslie Hope Linda Guest Star Audrey Wasilewski Janet Guest Star Joe Nieves Greg Guest Star David Sutcliffe Officer Kevin Nelson Guest Star Soren Fulton Jesse Guest Star Mickey Maxwell Jerry Guest Star Shonda Rhimes Executive Producer Betsy Beers Executive Producer Marti Noxon Executive Producer Mark Gordon Executive Producer Mark Tinker Executive Producer Ayanna Floyd Writer Helen Shaver Director