In House M.D., what type of doctor is James Wilson?

James Wilson is an oncologist in House M.D.

Wilson treats patients with cancer at Princeton-Plainsboro Teaching Hospital and frequently consults with Gregory House. His specialty explains why he often appears in emotionally difficult cases involving serious illness, treatment decisions, and end-of-life questions.

Oncology is the branch of medicine concerned with cancer. It includes the diagnosis and management of malignant disease and may involve treatments such as chemotherapy, radiation therapy, surgery, targeted therapy, or immunotherapy, depending on the patient and cancer type.

Wilson's professional role is sometimes mistaken for a surgical position because hospital dramas often place specialists together in operating-room storylines. In House M.D., however, Wilson is specifically the hospital's oncologist and is played by Robert Sean Leonard. His medical specialty also contrasts with House's broader diagnostic role.