Egged on by the Medicare Payment Advisory Commission (MedPAC), Congress has imposed multiple pay-for-performance (P4P) schemes on the fee-for-service Medicare program. MedPAC recommended most of these schemes between 2003 and 2008, and Congress subsequently imposed them on Medicare, primarily via the Affordable Care Act (ACA) of 2010 and the Medicare Access and CHIP Reauthorization Act (MACRA) of 2015.
MedPAC’s five-year P4P binge began with the endorsement of the general concept of P4P at all levels – hospital, clinic, and individual physician – in a series of reports to Congress in 2003, 2004, and 2005. This was followed by endorsements of vaguely described iterations of P4P, notably the “accountable care organization” in 2006 [1], punishment of hospitals for “excess” readmissions in 2007 [2], the “medical home” in 2008 and the “bundled payment” in 2008. None of these proposals were backed up by anything resembling evidence.
Congress endorsed all these schemes without asking for evidence or further details. Congress dealt with the vagueness of, and lack of evidence supporting, MedPAC’s proposals simply by ordering CMS to figure out how to make them work. CMS staff added a few more details to these proposals in the regulations they drafted, but the details were petty and arbitrarily adopted (how many primary doctors had to be in an ACO, how many patients had to sit on the advisory committee of a “patient-centered medical home,” how many days had to expire between a discharge and an admission to constitute a “readmission,” etc.).
New rule, new culture
This process – invention of nebulous P4P schemes by MedPAC, unquestioning endorsement by Congress, and clumsy implementation by CMS – is not working. Every one of the proposals listed above has failed to cut costs (with the possible exception of bundled payments for hip and knee replacements) and may be doing more harm than

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