Estimating demand for care after a medicaid expansion: lessons from Oregon

Rachel Gold, Steffani R. Bailey, Jean P. OʼMalley, Megan J. Hoopes, Stuart Cowburn, Miguel Marino, John Heintzman, Christine Nelson, Stephen P. Fortmann, Jennifer E. DeVoe

Research output: Contribution to journalArticlepeer-review

25 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)282-292
Number of pages11
JournalThe Journal of ambulatory care management
Issue number4
StatePublished - Oct 1 2014

ASJC Scopus subject areas

  • Health Policy


Dive into the research topics of 'Estimating demand for care after a medicaid expansion: lessons from Oregon'. Together they form a unique fingerprint.

Cite this