Dr. Bob Wachter, UCSF's chief of Medical Service, is credited with helping create a new specialty in medicine: hospitalists, doctors charged both with caring for hospitalized patients and making hospitals work better. In Internal Bleeding, his 2004 book with fellow hospitalist Dr. Kaveh Shojania, Wachter pulled back the curtain on the world of medical errors and discussed the latest thinking on how to prevent them. He also blogs about hospitals, patient safety and care quality.