What fictional medical specialty did House’s fellow Remy Hadley practice in House M.D.?

Remy Hadley practiced internal medicine in House M.D.

Remy Hadley, better known by her nickname Thirteen, joined House’s diagnostic team after competing in a selection process during the fourth season. Her medical background was internal medicine, giving her a broad foundation for evaluating complex, multisystem illnesses.

The character was played by Olivia Wilde. Thirteen’s personal story became especially important because she had inherited Huntington’s disease, a progressive neurological disorder, and eventually learned that she carried the disease-causing mutation.

Internal medicine is often confused with a narrower organ specialty. It is a broad field focused on adult medical conditions, while neurology, cardiology, and dermatology are distinct specialties. In the show, Thirteen’s diagnostic work required her to draw on that broad training.