In House M.D., what specialty does Remy “Thirteen” Hadley practice?

In House M.D., Remy “Thirteen” Hadley practices internal medicine. Olivia Wilde played the character, who became a member of House’s diagnostic team during the show’s fourth season.

Thirteen is a physician with strong diagnostic ability, but her personal story is also shaped by Huntington’s disease. Her mother died from the inherited disorder, and Thirteen eventually learns that she carries the gene. The storyline explores genetic testing, uncertainty, treatment choices, and the fear of developing a progressive neurological disease.

Internal medicine focuses on the prevention, diagnosis, and treatment of adult illnesses. It is broader than a single organ specialty, which fits the diagnostic team’s work across many body systems. Thirteen’s specific expertise is sometimes described differently in fan discussions because the show emphasizes her role on House’s team rather than a narrowly defined subspecialty.

Thirteen is not a neurologist, although Huntington’s disease becomes central to her life. She is also distinct from Cameron, Chase, and Foreman, whose careers and specialties develop along different paths.