Guest Stars Camilla Luddington as Dr. Jo Wilson Jerrika Hinton as Dr. Stephanie Edwards Gaius Charles as Dr. Shane Ross Tessa Ferrer as Dr. Leah Murphy Tina Majorino as Dr. Heather Brooks Teresa Huang as Nurse Ruth Dominic Hoffman as Dr. Jeff Russell Meeghan Holaway as Representative for the Doctors Tim De Zarn as Santa Claus Annie LaRussa as Dorie Danzinger Matthew Iott as Ken Danzinger Corey Craig as Brian Danzinger Co Starring Naomi Coai as Surgical Nurse LaTonya Holmes as Ruth Martin Chavez as Lab Tech