Skip Navigation LinksHome > October/December 2014 - Volume 37 - Issue 4 > Estimating Demand for Care After a Medicaid Expansion: Lesso...
Journal of Ambulatory Care Management:
doi: 10.1097/JAC.0000000000000023
Original Articles

Estimating Demand for Care After a Medicaid Expansion: Lessons From Oregon

Gold, Rachel PhD, MPH; Bailey, Steffani R. PhD; O'Malley, Jean P. MPH; Hoopes, Megan J. MPH; Cowburn, Stuart MPH; Marino, Miguel PhD; Heintzman, John MD, MPH; Nelson, Christine PhD, RN; Fortmann, Stephen P. MD; DeVoe, Jennifer E. MD, DPhil

Open Access
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To estimate how the Affordable Care Act's Medicaid expansions will affect demand for services, we measured ambulatory care utilization among adult patients who gained insurance during Oregon's 2008 Medicaid expansion. Using electronic health record data from 67 community health centers, we assessed pre- and postcoverage utilization among patients who gained insurance, compared with patients continuously insured or uninsured. In comparisons of the pre- and postcoverage periods, mean annual encounters among persons who gained insurance increased 22% to 35%, but declined in the comparison groups. These findings suggest that providers should expect a significant increase in demand among patients who gain Medicaid coverage through the Affordable Care Act.

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins


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