The medical drama's cast reunited on Stars in the House in support of costar Gloria Reuben’s organization, Waterkeeper Alliance Dory Jackson is a Staff Editor for PEOPLE's TV News team.

Four of County General’s finest are together again. More than 30 years after the debut of the NBC juggernaut ER, series vet Noah Wyle (fka Dr. John Carter) shared a new photo Friday with fellow ...

Included in the Cook County General Hospital gathering were Clooney (Dr. Doug Ross), Julianna Margulies (Nurse Carol Hathaway), Anthony Edwards (Dr. Mark Greene), and Noah Wyle (Dr. John Carter).