Robert Chase’s surname in House, M.D. is Chase.
Robert Chase is an Australian intensive-care specialist who joins Gregory House’s original diagnostic team. Jesse Spencer plays the character, whose medical background and personal history distinguish him from fellow team members Eric Foreman and Allison Cameron.
Chase is often associated with practical clinical skills, an initially cautious attitude toward House and a gradual increase in confidence and independence. His family background also becomes part of the series: his father, Rowan Chase, is a prominent physician whose influence affects Robert’s choices and self-image.
The surname is easy to confuse with later team members. Chris Taub, played by Peter Jacobson, joins after major changes to House’s staff, while Lawrence Kutner, played by Kal Penn, is another later diagnostician. Foreman is a separate original team member, not Chase’s surname. Chase remains one of the show’s longest-running doctors.