In House M.D., what is the name of Dr. James Wilson’s specialty?

Dr. James Wilson’s medical specialty in House M.D. is oncology.

Wilson, played by Robert Sean Leonard, is the head of oncology at Princeton-Plainsboro Teaching Hospital and Gregory House’s closest friend. His work treating cancer patients contrasts with House’s diagnostic investigations: Wilson often focuses on long-term relationships and difficult treatment decisions, while House pursues the underlying explanation for puzzling symptoms.

The series uses Wilson as a moral and emotional counterweight to House. He frequently challenges House’s behavior, yet he also understands House better than most colleagues and repeatedly helps him through professional and personal crises. Wilson’s oncology practice gives the character storylines involving prognosis, experimental treatment, informed consent, and the emotional burden carried by physicians.

The specialty is sometimes confused with hematology because some cancers affect blood and bone marrow. Oncology is the broader medical field devoted to cancer, including its diagnosis and treatment. Wilson’s exact role is therefore head of oncology, not a cardiologist or neurologist.