The American Osteopathic Board of Internal Medicine (AOBIM) is an organization that provides board certification to qualified Doctors of Osteopathic Medicine (D.O.) who specialize in the prevention, diagnosis, and treatment of disease in adults (internists). The board is one of 18 medical specialty certifying boards of the American Osteopathic Association Bureau of Osteopathic Specialists approved by the American Osteopathic Association (AOA), and was established in 1942. As of December 2011, 3,072 osteopathic internal medical physicians held active certification with the AOBIM.