Which medical specialist is Dr. James Wilson in House M.D.?

Dr. James Wilson is an oncologist in House M.D.

Wilson specializes in diagnosing and treating cancer, making oncology his professional role at Princeton-Plainsboro Teaching Hospital. His medical specialty is an important contrast with House’s position as a diagnostician, even though Wilson often contributes insight to difficult cases.

The character is played by Robert Sean Leonard and is introduced as House’s closest friend. Wilson’s compassion and willingness to listen frequently place him in the position of mediator between House and the rest of the hospital staff.

Viewers sometimes confuse Wilson’s specialty with neurology because Eric Foreman is a neurologist, or with cardiology because many hospital dramas feature cardiac specialists prominently. In House M.D., Wilson is specifically the oncology department’s physician and later faces a personal cancer diagnosis that becomes central to the final season.