In House M.D., House’s oncologist friend is named James Wilson.
Wilson is the head of oncology at Princeton-Plainsboro Teaching Hospital and serves as House’s most enduring personal connection. He often challenges House’s decisions while still helping him investigate cases and navigate professional consequences.
The clue about music refers to Wilson’s role as a guitarist. The character’s friendship with House is central to the series, and their relationship becomes especially important in the final season when Wilson receives a terminal cancer diagnosis.
James Wilson is played by Robert Sean Leonard. He is not one of House’s diagnostic fellows, although his oncology expertise makes him a recurring consultant. The character’s surname is sometimes confused with that of other hospital doctors, but “Wilson” is the canonical name of House’s close friend.