In House M.D., what medical specialties is Gregory House board-certified in?

Gregory House is board-certified in infectious disease and nephrology in House M.D.

These specialties help explain House’s role as a diagnostician. Infectious disease concerns illnesses caused by pathogens, while nephrology focuses on the kidneys and related disorders. House’s expertise lets him consider unusual systemic diseases that affect several organs at once.

The series presents him primarily as the head of Diagnostic Medicine rather than as a conventional infectious-disease or kidney specialist. His team investigates cases that other physicians have not solved, drawing on many branches of medicine and consulting specialists when needed.

House’s limp and chronic pain sometimes cause viewers to assume that orthopedics is one of his specialties, but it is not. His leg injury is part of his personal history, not his professional certification. The show also emphasizes that diagnostic brilliance does not make him competent in every procedure or medical discipline.