Caroline Chen is an investigative reporter. Currently, she writes for ProPublica, covering health care.Previously, Chen worked at Bloomberg News, where she wrote about Valeant Pharmaceutical’s use of a mail order pharmacy to boost reimbursements for its drugs, the tactics used by a rare disease drugmaker to scare patients into staying on therapy, and the plight of medically complex babies who get stranded in hospitals because of a lack of home-care nurses.Chen received her M.A. from Columbia University's Stabile Program in Investigative Journalism.