In House M.D., what medical specialty is Dr. House primarily known for?

Dr. Gregory House is primarily known as a specialist in diagnostic medicine in House M.D.

House leads a small diagnostic team that investigates patients with complex, unexplained symptoms. Rather than treating one organ system exclusively, the team compares clues across many specialties and builds competing explanations for the illness. This structure makes each episode resemble a medical investigation.

House is also described as having expertise in infectious disease and nephrology. Those fields help explain his unusual breadth of knowledge, but diagnostic medicine is the specialty most directly associated with his role and department at Princeton-Plainsboro Teaching Hospital.

The series dramatizes diagnosis for television, so its cases often compress time and emphasize rare conditions. Real diagnostic work commonly involves broader teams, repeated testing, consultation, and uncertainty rather than a single dramatic breakthrough.