Table 3.

Estimated Difference-in-Differences Parameters for Total Medicare Payments and Health Care Utilization, by Practice Type

	Total Medicare Payments	Hospitalizations†		Emergency Room Visits†		Physician Visits†
		For Any Condition	For ACSCs‡	For Any Condition	For ACSCs‡	Primary Care	Medical Specialist	Surgical Specialist
HCC risk score
<0.925	−237*	−4	−2	−53***	−14**	−26	−53	−22
0.925–1.07	−78	9	5	−38**	−6	73	−169*	−26
>1.07	−1,321*	−39*	−17	−97**	−230	130	101	−26
Practice type
Primary care	−325**	−4	−4	−68***	−18***	−12	34	−27*
Multispecialty	−273	2	4	−35*	−3	−108	−56	−12
FQHC	−127	2	−3	−59	−22	323	−142	−11
Practice size
Solo	−451*	−10	−10*	−57***	−18**	293	−18	−14
2-Person	−280	10	12	−63***	−10	149	−346***	−10
Small (3–5)	−316	4	−2	−41**	−10*	−1	−25	−9
Medium (6–10)	−264	−1	−1	−30*	−11	−15	16	−37*
Large (>10)	−215	−4	3	−71**	−8	71	−9	−42

^†Rate per 1,000 Medicare FFS beneficiaries.

^‡Ambulatory care sensitive conditions.

^*p < .05;

^**p < .01;

^***p < .001.