In the TV series House M.D., what is Dr. Gregory House’s medical specialty?

Dr. Gregory House’s specialty in House M.D. is diagnostic medicine.

House leads the Department of Diagnostic Medicine at the fictional Princeton-Plainsboro Teaching Hospital in New Jersey. His work focuses on identifying rare or unusually complicated illnesses after more conventional diagnoses have failed.

The show often presents diagnosis as a team activity. House’s fellows gather patient histories, perform tests, and debate possible causes, while House directs the differential diagnosis. His expertise is supported by knowledge of several medical fields, especially infectious disease and nephrology, but the hospital identifies him primarily as a diagnostician.

A common mix-up is to answer “infectious disease.” That is one of House’s formal areas of training, but it is not the name of his hospital department. The series uses diagnostic medicine as its central professional setting, allowing episodes to combine medical investigation with character drama.