In House M.D., what specialty does Gregory House practice?

In House M.D., Gregory House practices diagnostic medicine. The series follows House and his team as they investigate unusual illnesses that other doctors have failed to identify. His work is portrayed as a hospital-based specialty focused on solving difficult cases rather than performing one specific type of procedure.

House leads the Department of Diagnostic Medicine at the fictional Princeton-Plainsboro Teaching Hospital in New Jersey. The department is modeled around a real medical activity: physicians with broad knowledge assess puzzling symptoms, review test results, and coordinate specialist input when a diagnosis remains unclear.

Viewers sometimes call House a general practitioner because he handles many kinds of disease, but that is not his formal role in the show. He is also a licensed physician and a specialist in infectious disease and nephrology. Diagnostic medicine is the team’s central dramatic function, while those other specialties help explain House’s medical background.