In House M.D., which character is the hospital’s head of oncology?

In House M.D., James Wilson is the head of oncology at Princeton-Plainsboro Teaching Hospital.

Wilson is portrayed by Robert Sean Leonard and is Dr. House’s closest professional and personal confidant. His specialty is oncology, the branch of medicine devoted to cancer prevention, diagnosis, treatment, and follow-up care.

Unlike House, Wilson generally emphasizes empathy, communication, and the patient’s wishes. This difference creates one of the series’ recurring ethical tensions: House prioritizes solving the diagnostic puzzle, while Wilson frequently focuses on the human consequences of treatment.

Wilson’s position as an oncologist is also important to several major storylines involving serious illness and mortality. The character should not be confused with oncologists who appear only as guest physicians in individual episodes.