In House M.D., what medical specialty does Gregory House lead at Princeton-Plainsboro Teaching Hospital?

In House M.D., Gregory House leads the Department of Diagnostic Medicine at Princeton-Plainsboro Teaching Hospital.

The department is the fictional hospital unit where House and his rotating team investigate unusually difficult cases. Rather than focusing on one organ system, diagnostic medicine draws on many specialties to identify illnesses that have resisted conventional treatment.

House’s team is portrayed as unusually independent, and the show’s central cases often involve rare diseases, misleading symptoms, or several conditions occurring at once. The department’s name is sometimes confused with a real-world hospital department, but the series uses it as a dramatic setting for broad differential diagnosis. Princeton-Plainsboro itself is fictional, although the medical terminology and many diseases used in the series are real.