What is Dr. Wilson's medical specialty in House M.D.?

Dr. James Wilson's medical specialty in House M.D. is oncology. As an oncologist, he treats patients with cancer and frequently brings a perspective centered on prognosis, communication, and the personal consequences of serious illness.

Wilson's specialty shapes his relationship with House. Because oncologists regularly confront uncertain outcomes and end-of-life decisions, Wilson often emphasizes compassion and honesty, while House focuses on puzzles, probabilities, and diagnostic breakthroughs. Their disagreements are not simply personal; they reflect different professional approaches to medicine.

Wilson is sometimes mistaken for a neurologist because House M.D. includes many neurological cases and because Wilson participates in the diagnostic team's discussions. He is not the department's diagnostician, however. Robert Sean Leonard portrays Wilson, and the character's professional identity is consistently established as an oncologist throughout the series.