What medical specialties does Gregory House practice in House M.D.?

Gregory House practices infectious disease and nephrology in House M.D.

Those specialties help explain his focus on mysterious systemic illnesses, kidney disorders, and unusual diagnostic puzzles. House leads a diagnostic medicine department, where his team investigates cases that other doctors have not been able to solve.

The series often portrays House using knowledge from many medical fields, which can make viewers assume he is formally a specialist in every area. In the show’s background, however, infectious disease and nephrology are his named specialties. His diagnostic work combines those fields with broad clinical reasoning and intense attention to symptoms.

House’s medical expertise is fictionalized for drama, and real clinical practice is usually more collaborative and regulated than the show suggests. The specialties nevertheless form an important part of his character: he is not simply a general practitioner, but a physician whose training centers on complex disease and kidney medicine.