Release notes for the data
Data release briefings
One page per ingested CMS release: what the new file changed, the biggest shifts, and which answers were updated. Written to be forwarded.
Briefings are point-in-time. Each one describes the data as it stood when it was written, and older briefings quote vintages and figures that current production no longer uses. Current county enrollment is the April 2026 CMS file — see the current methodology or the county explorer for live figures.
Get the 5 biggest shifts in Medicare data, monthly
One email per CMS release cycle: what changed in the new data, the five largest market shifts, and links to the updated answers. No product news, no filler.
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