"The Medicaid data files are available to researchers directly from CMS (or its research data distribution center, Buccaneer Computer Systems & Service, Inc.). Files are typically requested on a per state, per year basis and involve the completion and submission of a new data use request packet to CMS. The specific Medicaid files that are available through ACARD and are stored on a dedicated server, are described further below."
"Sean Hennessy, PharmD, PhD, Associate Professor in the CCEB currently holds two NIH-funded R01s, and a RC1 utilizing Medicaid and Medicare data. These data are available to other researchers of the CTSA in accordance with rules set forth by CMS and policies established by the CCEB.
The following Medicaid and Medicare data reside in-house: 1999-2006 Medicaid claims (and supplemental Medicare claims for dual-eligibles) for beneficiaries of California, Florida, New York, Ohio, and Pennsylvania. These states have five of the largest Medicaid programs in the US and at any one time compromise approximately 23 million beneficiaries, or 39% of the entire Medicaid program."