In House M.D., which actor portrayed Dr. Remy Hadley, known as Thirteen?

Olivia Wilde portrayed Dr. Remy Hadley, known as Thirteen, in House M.D.

Thirteen joins House’s diagnostic team during the fourth season after the department’s major reorganization. Her nickname comes from her numbered position among the applicants competing for places on the new team.

The character is a physician with a specialty in internal medicine and a personal history involving Huntington’s disease. That inherited neurological condition becomes a significant part of her storyline and affects how she thinks about uncertainty, testing, and future illness.

Wilde’s performance made Thirteen one of the show’s most prominent later additions. The character’s nickname is so widely used that some viewers may not immediately connect it with her formal name, Remy Hadley.