Racial and Ethnic Segregation in Primary Care and Association of Practice Composition With Quality of Care

Objective: 

To assess the extent of segregation between racial and ethnic minority and White patients across primary care physicians and the association of practice panel racial/ethnic composition with the quality of care delivered.

Research Design: 

We examined the degree of racial/ethnic dissimilarity (a measure of segregation) in visits and the allocation of patient visits by different groups across primary care physicians (PCPs). We assessed the regression-adjusted relationship between the racial/ethnic composition of PCP practices and measures of the quality of care delivered. We compared outcomes in the pre-Affordable Care Act (ACA) and post-ACA (2006–2010/2011–2016) periods.

Subjects: 

We analyzed data on all primary care visits to office-based practitioners in the 2006–2016 National Ambulatory Medical Care Survey. PCPs were defined as general/family practice or internal medicine physicians. We excluded cases with imputed race or ethnicity information. For the quality of care analyses, we limited the sample to adults.

Results: 

Racial and ethnic minority patients remain concentrated within a small group of PCPs: 35% of PCPs accounted for 80% of non-White patients’ visits; 63% of non-White (or White) patients would need to switch physicians to make the distribution of visits across PCPs proportional between the groups. We observed little correlation between the PCPs panel’s racial/ethnic composition and quality of care. These patterns did not change substantially over time.

Conclusions: 

PCPs remain segregated, but the racial/ethnic composition of a practice panel is not associated with the quality of health care that individual patients receive in either the pre or post-ACA passage periods.

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