Physicians in the United States Congress have been a small minority of the members of Congress, with fluctuating numbers over the years. The number of physicians serving and running for Congress has risen over the last 50 years from 5 in 1960, down to a low of 2 in 1990, to a maximum of 21 in 2013 and a decrease to 14 in 2017. Possible explanations for this development have been increasing health care spending and increased health care reform debate in the United States, leading up to the Healthcare Reform Act.
In public opinion research by the American Medical Association (AMA) from 2013, voters rated "understanding of the problems facing our healthcare industry, including the bureaucratic red tape that is strangling health care providers and driving up the cost of health care for most Americans" as the most convincing statement of a physician candidate for Congress. Physicians in Congress have received large campaign contributions from health care trade associations and from peers through physician associations such as the AMA.