Table A2.

Provider Characteristics.

	Nurse practitioners, n = 57,148 (8.6%)		Physicians, n = 561,799 (84.9%)		Physician assistants, n = 42,705 (6.5%)
Practice characteristics	n	%	n	%	n	%
Practice type
Primary care	26,877	47.0	169,479	30.2	16,771	39.3
Specialty	30,271	53.0	392,320	69.8	25,934	60.7
Practice size
1-3	17,715	31.0	222,506	39.6	12,058	28.2
4-9	24,564	43.0	169,756	30.2	17,818	41.7
≥10	14,869	26.0	169,537	30.2	12,829	30.0
Medicaid acceptance	42,732	74.8	408,150	72.7	30,608	71.7
Rural location	3,585	6.3	15,951	2.8	2,358	5.5
High poverty	10,656	18.7	89,875	16.0	6,353	14.9
Full scope of practice only	2,414	4.2	20,010	3.6	2,303	5.4
100% Medicaid  reimbursement only	29,560	51.7	311,444	55.4	23,211	54.4
Full scope of practice  and 100% Medicaid  reimbursement	4,868	8.5	43,877	7.8	4,469	10.5

Note. Primary care was established based on the presence of at least two-third primary care physicians in a practice. Primary care physicians included the following: adolescent medicine, family practice, general practitioner, geriatrician, internist, and pediatrician. Practice size was calculated as the number of physicians, nurse practitioners, and physician assistants in each practice. Rural location was established using core-based statistical area (Office of Management and Budget), and high poverty was defined as at least 20% of the county population living in poverty. Percentages may not add to 100 because of rounding.