Guest Stars Jesse Williams as Dr. Jackson Avery Sarah Drew as Dr. April Kepner Jason George as Dr. Ben Warren Jaicy Elliot as Dr. Taryn Helm Debbie Allen as Dr. Catherine Avery Alex Landi as Dr. Nico Kim Zaiver Sinnett as Dr. Zander Perez E.R. Fightmaster as Dr. Kai Bartley Jay Hayden as Travis Montgomery Bianca Santos as Kristen Clark Cedric Sanders as Simon Clark Dawnn Lewis as Jamarah Blake Kristin Lehman as Cora Sandy Martin as Sally Co Starring Payton Silver as Dr. A. Knox Ryden Murphy as Scout Ryker Murphy as Scout Colette Gray as Leo Hunt Avalon Gray as Leo Hunt Sylvia Kwan as Dr. Mabel Tseng Janai Kaylani as Pru Miller River Davidson as Baby Allison Penelope Kapudija as Harriet Cathy Chang as Rose Wong Mark Garcia as Peds Team Member