CMS Increases Public Access to Medicaid and CHIP Data

Image above shows a screen grab from the Centers of Medicare & Medicaid Services website.

The Centers for Medicare & Medicaid Services (CMS) today released for the first time its research-ready Transformed Medicaid Statistical Information System (T-MSIS) data.

The federal agency said this “historic” data release is a milestone in CMS’s commitment in promoting transparency and accountability in the Medicaid program.

“The research community and stakeholders will have a powerful tool to provide creative solutions on Medicaid and CHIP healthcare delivery, outcomes, and financing,” said CMS Administrator Seema Verma.

Today’s release reverses years of a lack of access to Medicaid and CHIP data. These data provide key information, including information on utilization and spending under Medicaid managed care, and are needed to enable research and analysis to improve quality of care, assess beneficiary care costs and enrollment and improve program integrity.

Over the last five years, CMS and states have worked to improve the quality and integrity of the data states submitted to T-MSIS.

External researchers can obtain access to T-MSIS data by submitting a request to the CMS Research Data Assistance Center (ResDAC) and signing a CMS data use agreement containing strict beneficiary privacy and data security requirements.  To learn more visit the ResDAC website:

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