What is the name of House’s best friend and fellow physician in House, M.D.?

James Wilson is House’s best friend and fellow physician in House, M.D. Wilson is an oncologist at Princeton-Plainsboro Teaching Hospital and provides a compassionate counterbalance to House’s abrasive personality.

Their friendship is one of the show’s central relationships. Wilson often challenges House’s decisions, helps interpret his behavior, and remains connected to him despite House’s dishonesty, provocations, and repeated professional crises. House, in turn, depends on Wilson more than he usually admits.

Wilson’s medical specialty is oncology, the branch of medicine focused on cancer. That detail is sometimes confused with diagnostic medicine, which is House’s department, or with hospital administration, which belongs to other recurring characters.

The character was played by Robert Sean Leonard. Wilson’s personal life, marriages, patients, and eventual illness receive major storylines, especially late in the series. His relationship with House also reinforces the program’s recurring question of whether logic alone can explain human behavior.