We don’t know as much as we should about health systems, and our efforts are hampered by seriously flawed data.
Health care consolidation is sweeping through U.S. health care like a firestorm. In particular, there has been a rapid increase in the vertical integration of hospitals, physicians, and providers of post-acute care into health systems, whether implemented through traditional mergers and acquisitions or new arrangements such as joint ventures, affiliation agreements, and clinically integrated networks. We do not know as much as we should about these health systems, and current efforts to document the relationships among health care providers are hampered by significant limitations in existing data sources.
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