The Importance of Diversity in the Physician Assistant/Associate Workforce: Examining the Profession's Growth and Trends in Demographic Composition

Healthcare workforce diversity is essential for increasing access and reducing racial/ethnic health disparities. We examined the growth and trends in physician assistant/associate (PA) workforce demographic composition by initial year of certification. Drawing on data from the National Commission on Certification of Physician Assistants, we aggregated gender, age (1975-2020), race/ethnicity, and underrepresented in medicine (URiM) (2000-2020). Descriptive statistics of demographics were calculated by the initial certification year and assessed for trends using the Cochran-Armitage test. Analyses revealed an 11.7% annual growth rate in PAs earning initial certification and a change in gender composition (23.9% to 74.2% female) from 1975 to 2020. Between 2000 and 2020, we observed significant increases (all p<0.001) in the proportions of PAs who self-identify as Asian (5.7 percentage points), Hispanic/Latino(a) (3.5 percentage points), and multiracial (2.4 percentage points). However, there was a decline (all p<0.001) in the proportions of PAs who self-identify as Black/African American (1.2 percentage points), American Indian/Alaska Native (0.1 percentage points), Native Hawaiian/Pacific Islander (0.1 percentage points), and other race (1.1 percentage points). Trend analyses revealed that the proportion of PAs identifying as URiM decreased over the past 21 years. Ongoing assessment of the PA workforce demographics is essential to track the progress and effectiveness of diversification initiatives.