What is the name of the House M.D. character played by Amber Tamblyn in season seven?

Amber Tamblyn played Martha M. Masters in season seven of House M.D.

Masters is a brilliant medical student who joins House’s diagnostic team during the seventh season. She has a strong ethical code and refuses to lie to patients, even when House believes deception may help reveal the truth or secure a useful test. That principled approach creates regular conflict with House’s methods.

The character is notable because she is introduced as a student rather than an experienced physician. Her academic talent is extraordinary, but her limited clinical experience forces her to learn how hospital practice differs from classroom knowledge.

Masters is sometimes confused with Amber Volakis, another female doctor associated with House’s diagnostic teams. Volakis, played by Anne Dudek, competed in the season-four fellowship selection and later became Wilson’s partner. They are separate characters played by different actresses.