Dylan Walsh Dr. Sean McNamara Actor Julian McMahon Dr. Christian Troy Actor John Hensley Matt McNamara Actor Joely Richardson Julia McNamara Actor Roma Maffia Dr. Liz Cruz Actor Kelly Carlson Kimber Henry Actor Bradley Cooper Aidan Stone Guest Star Morgan Fairchild Herself Guest Star Katee Sackhoff Dr. Theodora 'Teddy' Rowe Guest Star Misha Collins Manny Skerritt Guest Star Tim Conlon Steve Meyer Guest Star Jeff Witzke Steve Freedman Guest Star Jacqueline Hickel Receptionist Guest Star Linda Klein Nurse Linda Guest Star Kristina Krofft Stage Mom Guest Star Jennifer Naimo Casting Director Guest Star Ryan Murphy Writer Dirk Craft Director