Which actor portrayed Dr. Robert Chase in House M.D.?

Jesse Spencer portrayed Dr. Robert Chase in House M.D.

Chase is an Australian physician and one of the three original fellows recruited to House's diagnostic team. He initially appears more deferential to House than Foreman or Cameron, but his medical judgment and independence become more prominent as the series progresses.

Spencer, an Australian actor and musician, played Chase for the entire run of House. Before the series, he was known in Australia for the soap opera Neighbours. After House, he became widely recognized for playing Matthew Casey in the Chicago Fire television franchise.

A frequent mix-up is identifying Chase as a surgeon from the beginning. His career develops across several medical roles, and later storylines emphasize his surgical training and leadership. The character's Australian background is also reflected in Spencer's natural accent being used on the show.