In House M.D., what is the name of the hospital’s diagnostic medicine department?

House M.D. features the Department of Diagnostic Medicine at Princeton-Plainsboro Teaching Hospital.

Gregory House leads this specialized department, which investigates patients whose symptoms do not fit an obvious diagnosis. Its unusual cases provide the series with a structure different from that of a conventional emergency-room or general-practice drama.

The department’s team changes over the course of the show. House’s original fellows are Eric Foreman, Allison Cameron, and Robert Chase. Later seasons introduce additional doctors, but the department remains centered on House’s process of forming, testing, and revising diagnostic hypotheses.

The department is fictional, although diagnostic medicine is a real area of medical practice. In real hospitals, complex diagnostic work may involve internal medicine, subspecialists, pathology, radiology, and laboratory medicine rather than a single department organized exactly like House’s unit. That distinction is a common source of confusion for viewers.