This document provides a chronological survey of Western medicine from 1500-2000, focusing on key periods and issues. It discusses the shift around 1800 that laid the foundations of modern medicine, moving from a humoral theory of the body to new models based on anatomy, physiology, and pathology. Major developments included the growth of scientific medicine in 19th century Paris focusing on hospitals, laboratories, and cellular pathology. The germ theory of disease and development of antibiotics revolutionized medicine in the late 19th/early 20th centuries.