Data are for December 2008. U.S. total excludes territories.
Nonfederal physicians are not employed by the federal government and includes allopathic physicians (MDs) and osteopathic physicians (DOs). They represent 98% of total physicians. Data include retired and inactive doctors (approximately 12% of all nonfederal physicians).

American Medical Association, Physicians Professional Data, year of data 2008, copyright 2008: Special Data Request.

2008 population data from Annual Population Estimates by State, July 1, 2008 Population, U.S. Census Bureau; available at http://www.census.gov/popest/states/tables/NST-EST2008-01.xls.

Allopathic Physicians practice allopathic medicine (sometimes called conventional medicine): the system of medical practice which treats disease by the use of remedies which produce effects different from those produced by the disease under treatment. Osteopathic Physicians practice osteopathic medicine which focuses primarily on the manipulation of the musculoskeletal system and emphasizes preventive medicine while taking a holistic approach to health. An osteopathic physician is licensed to perform surgery and prescribe medication. An osteopath completes four years of medical school and can choose to practice in any specialty of medicine.

NA: Data are not available.