In House M.D., Eric Foreman is the neurologist who later succeeds House as head of Diagnostic Medicine.
Foreman begins the series as one of House's original fellows, alongside Robert Chase and Allison Cameron. His medical specialty is neurology, and his background and disciplined reasoning make him a frequent counterweight to House's impulsive and unconventional approach. Foreman is also willing to reject House's instructions when he believes patient safety or professional standards require it.
Over time, Foreman moves through several roles at Princeton-Plainsboro, including senior physician and hospital administrator. His career path eventually leads him to become head of the Department of Diagnostic Medicine after House's departure from the hospital. That succession is a major marker of Foreman's professional development.
Chase and Cameron are common alternatives because they were also original fellows, but neither is the neurologist who becomes House's successor. Chris Taub joined the team later and is a plastic surgeon.