David J. Nyweide

Association of Pioneer Accountable Care Organizations vs Traditional Medicare Fee for Service With Spending, Utilization, and Patient Experience

IMPORTANCE The Pioneer Accountable Care Organization (ACO) Model aims to drive health care organizations to reduce expenditures while improving quality for fee-for-service (FFS) Medicare beneficiaries. OBJECTIVE To determine whether FFS beneficiaries aligned with Pioneer ACOs had smaller increases in spending and utilization than other FFS beneficiaries while retaining similar levels of care satisfaction in the first 2 years of the Pioneer ACO Model. DESIGN, SETTING, AND PARTICIPANTS Participants were FFS Medicare beneficiaries aligned with 32 ACOs (n = 675,712 in 2012; n = 806,258 in 2013) and a comparison group of alignment-eligible beneficiaries in the same markets (n = 13,203,694 in 2012; n = 12,134,154 in 2013). Analyses comprised difference-in-differences multivariable regression with Oaxaca-Blinder reweighting to model expenditure and utilization outcomes over a 2-year performance period (2012-2013) and 2-year baseline period (2010-2011) as well as adjusted analyses of Consumer Assessment of Healthcare Providers & Systems (CAHPS) survey responses among random samples of beneficiaries in Pioneer ACOs (n = 13,097), FFS (n = 116,255), or Medicare Advantage (n = 203,736) for 2012 care. EXPOSURES Beneficiary alignment with a Pioneer ACO in 2012 or 2013. MAIN OUTCOMES AND MEASURES Medicare spending, utilization, and CAHPS domain scores. RESULTS Total spending for beneficiaries aligned with Pioneer ACOs in 2012 or 2013 increased from baseline to a lesser degree relative to comparison populations. Differential changes in spending were approximately -

Continuity of Care and the Risk of Preventable Hospitalization in Older Adults

35.62 (95% CI, -

Higher Health Care Quality And Bigger Savings Found At Large Multispecialty Medical Groups

40.12 to -

Appropriateness of Advanced Diagnostic Imaging Ordering Before and After Implementation of Clinical Decision Support Systems

31.12) per-beneficiary-per-month (PBPM) in 2012 and -

Physician Networks and Ambulatory Care-sensitive Admissions.

11.18 (95% CI, -

Concordance Between Continuity of Care Reported by Patients and Measured From Administrative Data

15.84 to -

Comparison of Hospital Resource Use and Outcomes Among Hospitalists, Primary Care Physicians, and Other Generalists

6.51) PBPM in 2013, which amounted to aggregate reductions in increases of approximately -

Relationship Between Continuity of Ambulatory Care and Risk of Emergency Department Episodes Among Older Adults.

280 (95% CI, -

Relationship of primary care physicians' patient caseload with measurement of quality and cost performance.

315 to -

Seniors’ Perceptions Of Health Care Not Closely Associated With Physician Supply

244) million in 2012 and -