Ernst Philip Boas was an early advocate of a universal health care system and insurance where he organized a group called the Physician's Forum for the Study of Medical Care that gathered about 3000 doctors from the American Medical Association, the largest association of physicians founded in 1897 and incorporated in 1897.
The American Medical Association (AMA), founded in 1847 and incorporated in 1897, is the largest association of physiciansboth MDs and DOsand medical students in the United States. 
