Dr. House’s closest friend in House M.D. is named James Wilson.
James Evan Wilson is an oncologist at Princeton-Plainsboro Teaching Hospital and one of the few people willing to challenge House consistently. Robert Sean Leonard played Wilson throughout the series, portraying him as compassionate, socially skilled, and more patient than his friend.
Wilson’s friendship with House is central to the show. Their contrasting personalities create both comic situations and serious emotional storylines, particularly when House’s decisions put their friendship or Wilson’s career at risk.
Viewers sometimes use “Wilson” as though it were the character’s full name, but James is his first name. He is also often confused with hospital administrators or members of House’s diagnostic team because his role changes across the series.