Guest Stars Alejandro Hernandez as Casey Acosta Shiva Kalaiselvan as Leyla Shinwari Christine Chang as Dr. Agnes Kao Nadia Affolter as Mina Jahani Becky Ann Baker as Gwen Bennett Luke Slattery as PFC Chance Becker Annabella Sciorra as Dr. Romy Lució David Aaron Baker as Roland Mulvane Priscilla Lopez as Juanita Eva Kaminsky as Mrs. Mulvane Willie C. Carpenter as Thom Co Starring Nora Clow as Luna Opal Clow as Luna Em Grosland as Nurse Kai Brunstetter Isaiah Seward as Paramedic Durango Sol Marina Crespo as Nurse Kat Della Cruz Gary Lee Mahmoud as Evan Nashton Najla Said as Dr. Salaita Dee Hoty as Alexis Luther Sweta Keswani as Board Member Soma Kulkarni Damani Varnado as Patient Shea Jordan Baker as Dr. Bea Boucher Robert McKay as Dr. Callen Reed Manny Galan as Javier Danny Borbon as Patient Mendoza Miriam Cruz as Robin Perez William Zielinski as Dr. Olenchalk Melanie Mahanna as Sydney Nolens Lizzy Jutila as Patient Wu Alix Elias as Dolores Jefferson Edythe Jason as Vera Brittany Pearl McGraw as Allison Mulvane Vincent Minutella as Bruce