The Eﬀects of Physician and Hospital Integration on Medicare Beneﬁciaries’ Health Outcomes
Bureau of Economics Federal Trade Commission, WP No. 337
56 Pages Posted: 13 Aug 2018
Date Written: July 2018
We consider whether hospital acquisitions of physicians lead to improved clinical outcomes for Medicare patients aged 65 and older. The analysis combines 2005-2012 Medicare fee-for-service and enrollment data with merger and physician aﬃliation information from the Levin Reports and SK&A, respectively. The analysis uses propensity score matching and a discrete-time hazard model to determine the eﬀect of acquisitions on several health outcomes: mortality, acute myocardial infarctions, acute circulatory conditions, ischemic heart disease, glaucoma, symptomatic diabetes complications, and asymptomatic diabetes complications. These outcomes represent the progression of hypertension and diabetes into worse health states. Our results indicate that hospital acquisitions of existing physician practices have no statistically signiﬁcant clinical beneﬁts for the health outcomes we consider.
Keywords: Integration, Industrial Organization, Physicians, Medicare, Mortality, Diabetes, Hypertension, Health Outcomes
JEL Classification: I11, L23, L40
Suggested Citation: Suggested Citation