National Trends in Primary Care Visit Use and Practice Capabilities, 2008-2015.

Purpose: Recent evidence shows a national decline in primary care visit rates over the last decade. It is unclear how changes in practice-including the use and content of primary care visits-may have contributed.

Methods: We analyzed nationally representative data of adult visits to primary care physicians (PCPs) and physician practice characteristics from 2007-2016 (National Ambulatory Medical Care Survey). United States census estimates were used to calculate visits per capita. Measures included visit rates per person year; visit duration; number of medications, diagnoses, and preventive services per visit; percentage of visits with scheduled follow-up; and percentage of physicians with practice capabilities including an electronic medical record (EMR).

Results: Our weighted sample represented 3.2 billion visits (83,368 visits, unweighted). Visits per capita declined by 20% (-0.25 visits per person, 95% CI, -0.32 to -0.19) during this time, while visit duration increased by 2.4 minutes per visit (95% CI, 1.1-3.8). Per visit, PCPs addressed 0.30 more diagnoses (95% CI, 0.16-0.43) and 0.82 more medications (95% CI, 0.59-1.1), and provided 0.24 more preventive services (95% CI, 0.12-0.36). Visits with scheduled PCP followup declined by 6.0% (95% CI, -12.4 to 0.46), while PCPs reporting use of EMR increased by 44.3% (95% CI, 39.1-49.5) and those reporting use of secure messaging increased by 60.9% (95% CI, 27.5-94.3).

Conclusion: From 2008 to 2015, primary care visits were longer, addressed more issues per visit, and were less likely to have scheduled follow-up for certain patients and conditions. Meanwhile, more PCPs offered non-face-to-face care. The decline in primary care visit rates may be explained in part by PCPs offering more comprehensive in-person visits and using more non-face-to-face care.