Table 1.

Characteristics of ACOs interviewed compared to full sample in National Survey of ACOs

	Interview sample (N=30)	NSACO Wave 1 (N=175)
Region
Northeast	43%	27%
Midwest	20%	25%
West	27%	22%
South	10%	26%
ACO contracts
Medicare	63%	85%
Medicaid	40%	26%
Commercial	47%	30%
Multi-payer	43%	41%
Any current contract with risk	37%	34%
Organizational composition
ACO includes hospital	70%	63%
ACO includes community health center	70%	28%
ACO includes medical group	80%	90%
ACO includes specialty group	67%	56%
ACO includes nursing facility	37%	22%
ACO is an integrated delivery system	47%	54%
Safety net participation†
ACO consists predominantly of safety net providers	27%	NA
ACO includes at least one safety net provider	47%	NA
ACO includes no safety net component	27%	NA
Respondent†
ACO Director	20%	NA
Chief Executive Officer	10%	NA
Chief Medical Officer or Medical Director	33%	NA
Other senior ACO staff (e.g. Vice President, Executive     Director, Network Director)	30%	NA
ACO board chair	7%	NA
Total sample	30	175

^†Information on the safety net providers and respondent title are not available in wave 1 of the for comparison NSACO to interview site and interviewee characteristics