The Health Data Access Initiative (HDAI)

Health care utilization data from the federal Centers for Medicare and Medicaid Services (CMS) are a key data source for population health research. UC researchers collectively spend millions of dollars each year accessing these data, yet once purchased, they can be re-used for a fraction of the cost.

CPL seeks to make these data accessible to a wider range of UC students and researchers.

The Health Data Access Initiative (HDAI) will establish a UC-wide repository for Medicare and Medicaid data from CMS. CPL will use a pool of funding to purchase CMS data costing hundreds of thousands of dollars. The HDAI will then make it possible for UC researchers to re-use these CMS data for an accessible $2,000 fee, plus some administrative fees.

HDAI will support a range of projects across the social and health sciences.

What Data are Available?

The data available from CMS are listed here. HDAI has projects in motion to purchase several years of the Medicaid T-MSIS Analysis Files. Through its seed grant program, CPL will consider providing matching funding for researchers purchasing CMS data through HDAI.

What is the Process for Requesting Access to the Data?

If you’re interested in using the CMS data, reach out to with a paragraph describing your research project, and any information about the data that would be required.

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