[quote=https://www.aamc.org/download/426248/da ... 013to2.pdf]
Projections of future supply and demand for physicians suggest a shortfall of 46,100 to 90,400 physicians, including a shortfall of 12,500 to 31,100 primary care physicians and a shortfall of 28,200 to 63,700 non-primary care physicians. 3 In percentage terms the shortfall is greatest among surgical specialties (excluding obstetrics and gynecology) reflecting little projected growth in supply of surgeons and limitations on the ability to augment staffing with other types of clinicians.
Uncertainties regarding how emerging care delivery models and changing care practices might affect physician supply and demand, together with uncertainties regarding how clinicians and care settings will respond to economic and other trends, underscore the importance of ongoing research on potential implications of the evolving health care system for the nation’s physicians. The large range for the shortage projections reflects uncertainty about key supply and demand determinants, reflecting important areas for future research. These include: 1) how physician retirement patterns might change over time based on economic factors, work satisfaction, trends in health and mortality, and cultural norms regarding retirement; 2) whether younger physicians will continue to have similar work-life balance expectations as older cohorts; 3) how clinician staffing patterns are likely to evolve over time; and 4) the effects of different payment models.
Differences in projections between this 2015 report and the 2008 and 2010 reports reflect updates to key supply and demand drivers (e.g., population projections) and acceleration in the pace of change in health care delivery. These differences in projections highlight the importance of continually monitoring projected adequacy of supply to incorporate the latest trends in supply and demand determinants, the latest research on care delivery models (e.g., Accountable Care Organizations), and changing technology and economic conditions.

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