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Has the Shift to Managed Care Reduced Medicaid Expenditures? Evidence from State and Local-Level Mandates

  • Mark Duggan
  • Tamara Hayford

From 1991 to 2003, the fraction of Medicaid recipients enrolled in HMOs and other forms of Medicaid managed care (MMC) increased from 11 percent to 58 percent. This increase was largely driven by state and local mandates that required most Medicaid recipients to enroll in an MMC plan. Theoretically, it is ambiguous whether the shift from fee-for-service into managed care would lead to an increase or a reduction in Medicaid spending. This paper investigates this effect using a data set on state and local level MMC mandates and detailed data from CMS on state Medicaid expenditures. The findings suggest that shifting Medicaid recipients from fee-for-service into MMC did not reduce Medicaid spending in the typical state. However, the effects of the shift varied significantly across states as a function of the generosity of the state's baseline Medicaid provider reimbursement rates. These results are consistent with recent research on managed care among the privately insured, which finds that HMOs and other forms of managed care achieve their savings largely through reduced prices rather than lower quantities.

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File URL: http://www.nber.org/papers/w17236.pdf
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number 17236.

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Date of creation: Jul 2011
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Publication status: published as Mark Duggan & Tamara Hayford, 2013. "Has the Shift to Managed Care Reduced Medicaid Expenditures? Evidence from State and Local‐Level Mandates," Journal of Policy Analysis and Management, John Wiley & Sons, Ltd., vol. 32(3), pages 505-535, 06.
Handle: RePEc:nbr:nberwo:17236
Note: HC HE PE
Contact details of provider: Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.
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