In House M.D., what medical specialty does Dr. Robert Chase practice?

In House M.D., Dr. Robert Chase practices intensive care medicine.

Chase is one of Gregory House's original diagnostic fellows and is portrayed by Australian actor Jesse Spencer. His background and role change during the series, but intensive care medicine is the specialty associated with his later professional position at Princeton-Plainsboro.

The character is often remembered simply as a member of House's diagnostic team, which can obscure the distinction between the team's diagnostic work and each doctor's own specialty. Chase's medical training includes intensive care, while other original team members have different fields, such as immunology and neurology.

Chase is also one of the few original fellows to remain connected to the series through its entire run. His relationship with House develops from supervised trainee to experienced physician, and later storylines give him greater authority and responsibility within the hospital.