Trading Spaces: Medicare’s Regulatory Spillovers on Treatment Setting for Non-Medicare Patients
Medicare pricing is known to indirectly influence provider prices and care provision for non-Medicare patients; however, Medicare’s regulatory externalities beyond fee-setting are less well understood. We study how physicians’ outpatient surgery choices for non-Medicare patients responded to Medicare removing a ban on ambulatory surgery center (ASC) use for a specific procedure. Following the rule change, surgeons began reallocating both Medicare and commercially insured patients to ASCs. Specifically, physicians became 70% more likely to use ASCs for the policy-targeted procedure among their non-Medicare patients. These novel findings demonstrate that Medicare rulemaking affects physician behavior beyond the program’s statutory scope.
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