<Li> Shaunette Renée Wilson as Mina Okafor: a surgical resident at Chastain Park Memorial Hospital . </Li> <Li> Bruce Greenwood as Randolph Bell: chief of surgery, later CEO, at Chastain Park Memorial Hospital . </Li> <Li> Moran Atias as Renata Morali (season 1): head of publicity at Chastain Park Memorial Hospital . </Li> <Li> Merrin Dungey as Claire Thorpe (season 1): former CEO at Chastain Park Memorial Hospital . </Li>

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