What medical specialty does House lead at Princeton-Plainsboro in House M.D.?

House leads the Department of Diagnostic Medicine at Princeton-Plainsboro in House M.D.

The department investigates illnesses that have resisted ordinary diagnosis. House works with a small team of specialists, assigning tests and proposing competing explanations until the group identifies the underlying disease.

Diagnostic medicine is the fictional specialty that gives the series its case-solving structure. The doctors draw on real fields such as neurology, immunology, oncology, and infectious disease, but the department itself is presented as an unusually broad hospital unit centered on difficult diagnoses.

This role is distinct from the hospital's other departments. House is not primarily the head of cardiology, neurosurgery, or emergency medicine, although cases often require consultation with those specialties.