he has connected with Lydia, he agrees to write the letter to get House's job back. He returns in "Epic Fail". In a therapy session with House, he convinces him to try a new hobby with Wilson. After House is still getting pain in his leg despite his new cooking hobby, he recommends he returns to diagnostic medicine, because helping solve a case temporarily relieved his pain. In "Baggage", House quits therapy, saying that he took Dr. Nolan's advice for a year, and yet he still feels miserable. He blames Nolan for his loneliness and accuses him of being nothing more than a faith healer. Juan "Alvie" Alvarez (Lin-Manuel Miranda) is a psychiatric patient who is House's roommate at rehab in "Broken". Alvie suffers from bipolar disorder, but refuses to take his medication. He suffers from manic episodes and wants to be a rapper. He supports House not taking his medication either. House stood by Alvie throughout his time in rehab, and enjoyed his company (though House never admitted it directly). In "Baggage", House moves out of Wilson's condo to discover that Alvie has been living in his old apartment and selling his belongings in order to buy paint for the walls, which he thought needed to be brighter. Alvie, who had no identification papers, was hiding from U.S. Citizenship and Immigration Services, which suspected he was an illegal immigrant, despite the fact he's Puerto Rican and thus a U.S. citizen. House helped by claiming to be his doctor and producing a "DNA test" that proved Alvie was related to his mother, who had proper documentation. Nurse Regina (Tracy Vilar) is a nurse in the hospital's free clinic. Dr. Cuddy and nurse Regina have a rapport and the latter often mocks Cuddy about her interactions with House and the stresses that come with Cuddy's job. Doctor Cheng (Keiko Agena) is a pediatrician who appears in the season seven episode, "Unplanned Parenthood". Impressed by her abilities, Taub attempts to have her hired as Thirteen's replacement. She also impresses House by helping him with Rachel using her pediatric skills, and he gives Taub the go ahead to hire her. However, worried that House is messing around with him, Taub delays hiring her, leading her to turn down the offer because his lack of backbone makes him look childish, and she hates working with children. Notable Guest stars Robin Tunney — Rebecca Adler