biostudies-literatureComfort LNAgency for Healthcare Research and QualityThe Commonwealth FundCommonwealth FundNIA NIH HHSAHRQ HHSNational Institutes of HealthAgency for Healthcare Research and Quality (AHRQ)NIH HHS2303-2323https://www.ebi.ac.uk/biostudies/studies/S-EPMC6052017biostudies-literatureUnknown53(4)OBJECTIVE:To examine whether an empirically derived taxonomy of Accountable Care Organizations (ACOs) is associated with quality and spending performance among patients of ACOs in the Medicare Shared Savings Program (MSSP). DATA SOURCES:Three waves of the National Survey of ACOs and corresponding publicly available Centers for Medicare & Medicaid Services performance data for NSACO respondents participating in the MSSP (N = 204); SK&A Office Based Physicians Database from QuintilesIMS. STUDY DESIGN:We compare the performance of three ACO types (physician-led, integrated, and hybrid) for three domains: quality, spending, and likelihood of achieving savings. Sources of performance variation within and between ACO types are compared for each performance measure. PRINCIPAL FINDINGS:There is grHealth services researchMedicare Accountable Care Organizations of Diverse Structures Achieve Comparable Quality and Cost Performance.PMC6052017#R33AG044251#1U19HS024075R33 AG044251#20130084T32 HS022241#1T32HS022241-01#20160616#4T32HS022241U19 HS024075Comfort LNRodriguez HPShortell SMColla CHfalseMedicare Accountable Care Organizations of Diverse Structures Achieve Comparable Quality and Cost Performance.OBJECTIVE:To examine whether an empirically derived taxonomy of Accountable Care Organizations (ACOs) is associated with quality and spending performance among patients of ACOs in the Medicare Shared Savings Program (MSSP). DATA SOURCES:Three waves of the National Survey of ACOs and corresponding publicly available Centers for Medicare & Medicaid Services performance data for NSACO respondents participating in the MSSP (N = 204); SK&A Office Based Physicians Database from QuintilesIMS. STUDY DESIGN:We compare the performance of three ACO types (physician-led, integrated, and hybrid) for three domains: quality, spending, and likelihood of achieving savings. Sources of performance variation within and between ACO types are compared for each performance measure. PRINCIPAL FINDINGS:There is gr2018-01-01T00:00:00Z2018 Aug2025-04-18T18:13:27.728Z2019-08-07T07:01:13ZS-EPMC60520172938819910.1111/1475-6773.12829