Maria Perez’s fever had climbed to 103, her body ached and she had trouble breathing. After being told in the emergency room that she had pneumonia, Perez went to a clinic in South Los Angeles for a follow-up appointment. The doctor asked Perez about her housing situation. Her apartment had cockroaches and mice, Perez said, and rain came through a broken window and filled the walls with mold. The doctor wrote prescriptions to treat the pneumonia and an asthma flare-up and then did something that he hoped would prevent her from getting even sicker: He sent her down the hall to talk to a lawyer.