EX

Kate Walsh (s1-s3)

Isaiah Washington (s1-s3)
T.R.Knight (s1-s5)

Katherine Heigl (s1-s6)

Sandra Oh (s1-s10)

Patrick Dempsey (s1-s11)

Sara Ramirez (s2-s12)

Eric Dane (s3-s9)

Brooke Smith (s4-s5)

Chyker Leigh (s4-s9)

Kim Raver (s6-s8)

Gaius Charles (s10)

Tessa Ferrer (s10-13 guest star)