In House M.D., what specialty does Gregory House officially lead?

In House M.D., Gregory House officially leads the Department of Diagnostic Medicine.

House’s department specializes in solving medically complex cases that do not fit an obvious diagnosis. Rather than treating one organ system, its doctors combine clues from multiple specialties and order targeted tests to identify the underlying disease.

The department is based at Princeton-Plainsboro Teaching Hospital and initially consists of House and three fellows. The team changes several times during the series, but House remains the central diagnostician and supervisor.

Diagnostic medicine is presented dramatically in the show, with House often using unconventional reasoning and aggressive investigations. Real hospitals may have diagnostic medicine services, but the department’s structure and House’s unusually broad authority are fictionalized for television.