As of 2012, there were about six primary care professional societies in the United States, including American College of Physicians, American Academy of Family Physicians, the Society of General Internal Medicine, the American Academy of Pediatrics, the American Osteopathic Association, and the American Geriatrics Society.
A 2009 report by the New England Healthcare Institute determined that an increased demand on primary care by older, sicker patients and decreased supply of primary care practitioners has led to a crisis in primary care delivery. The research identified a set of innovations that could enhance the quality, efficiency and effectiveness of primary care in the United States.
On March 23, 2010 President Obama signed the Patient Protection and Affordable Care Act (ACA) into law. The law is estimated to have expanded health insurance coverage by 20 million people by early 2016 and is expected to expand health care to 34 million people by 2021. The success of the expansion of health insurance under the ACA in large measure depends on the availability of primary care physicians. Unfortunately, The ACA has drastically exacerbated the projected deficit of primary care physicians needed to ensure care for insured Americans. According to the Association of American Medical Colleges (AAMC) without the ACA, the United States would have been short roughly 64,000 physicians by 2020; with the implementation of the ACA, it will be 91,000 physicians short. According to the AAMC’s November 2009 physician work force report, nationally, the rate of physicians providing primary care is 79.4 physicians per 100,000 residents.