What is the nickname of Remy Hadley in House M.D.?

Remy Hadley’s nickname in House M.D. is Thirteen.

Remy Hadley is a physician who joins House's diagnostic team and is played by Olivia Wilde. The nickname comes from the number assigned to her as a competition candidate during the process of selecting new members for House's team. It eventually becomes the name by which she is commonly known at the hospital.

The character's personal history becomes central to the series. Hadley carries the gene for Huntington's disease, a hereditary neurodegenerative disorder, and her uncertainty about developing the illness affects several major storylines. Her medical knowledge and guarded personality also make her an important member of the diagnostic group.

Thirteen is a nickname, not Hadley's surname or official medical specialty. “Amber” is another important name connected to the team, but it belongs to Amber Volakis, a different doctor and character.