Guest Stars Jason George as Dr. Ben Warren Jake Borelli as Dr. Levi Schmitt Chris Carmack as Dr. Atticus "Link" Lincoln Greg Germann as Dr. Tom Koracick Jaina Lee Ortiz as Andy Herrera McNally Sagal as Kari Donnelly Ali Hillis as Lori Carter Omar Leyva as Luis Rivera Boris Kodjoe as Robert Sullivan William Harper as Owen's Therapist Brett Tucker as Lucas Ripley Co Starring Aniela Gumbs as Zola Grey Shepherd Alex Landi as Dr. Nico Kim John O'Brien as Lab Tech Jeffrey Christian Ganiere as Gus Carter Allyson Juliette as Gabriella "Gabby" Rivera Karla E. Rodriguez as Nurse Uncredited Kathy C. An as Nurse Bokhee