<Li> Martin Henderson as Dr. Nathan Riggs (Until Episode 5) </Li> <Li> Giacomo Gianniotti as Dr. Andrew DeLuca </Li> <Ul> <Li> Debbie Allen as Dr. Catherine Avery </Li> <Li> Kim Raver as Dr. Teddy Altman </Li> <Li> Abigail Spencer as Dr. Megan Hunt </Li> <Li> Greg Germann as Dr. Tom Koracick </Li> <Li> Matthew Morrison as Dr. Paul Stadler </Li> <Li> Stefania Spampinato as Dr. Carina DeLuca </Li> <Li> Jake Borelli as Dr. Levi Schmitt </Li> <Li> Jeanine Mason as Dr. Sam Bello </Li> <Li> Alex Blue Davis as Dr. Casey Parker </Li> <Li> Rushi Kota as Dr. Vikram Roy </Li> <Li> Jaicy Elliot as Dr. Taryn Helm </Li> <Li> Sophia Taylor Ali as Dr. Dahlia Qadri </Li> </Ul> <Li> Debbie Allen as Dr. Catherine Avery </Li>

Who plays sam on grey's anatomy season 14