This timeline summarizes the major developments in the history of health care and health insurance in the United States from 1900 to 2010. It shows that organized medicine began taking shape in the early 1900s while the concept of health insurance was first promoted in 1912. The first modern health insurance plan was created in 1929 in Dallas, Texas. Major developments include the establishment of Medicare and Medicaid in 1965, the passage of the Affordable Care Act in 2010, and various attempts at health care reform throughout the 20th century.