Which House M.D. doctor is from Australia?

Robert Chase is the House M.D. doctor from Australia.

Chase is a member of House’s original diagnostic team and is portrayed by Australian actor Jesse Spencer. The character’s Australian background is part of his biography and distinguishes him from colleagues such as Eric Foreman and Allison Cameron.

Chase initially works under House as a fellow in the Department of Diagnostic Medicine. He is an intensivist by training and later develops a broader leadership role at Princeton-Plainsboro. His medical knowledge, pragmatic style, and complicated relationship with House make him one of the longest-serving members of the diagnostic department.

The character is sometimes confused with Jesse Spencer himself because the actor’s real accent is Australian. In the series, Chase’s nationality is also explicitly part of his character history. He remains connected to the hospital through major staff changes and ultimately succeeds House as head of Diagnostic Medicine.