DATASET · CMS
5,956 certified facilities.
Quality measures for Medicare-certified ambulatory surgical centers.
Refreshed quarterly · FHIR Location · SLA: Within 48h of quarterly CMS release
FHIR Location · sample record
What a record looks like in the API response.
{
"resourceType": "Location",
"id": "asc-14-2012345",
"_source": "cms-care-compare-asc",
"_methodology": "care-compare-asc/v1",
"type": [{ "text": "Ambulatory Surgical Center" }]
}Every record carries _source, _methodology, snapshot date, and confidence tier. These fields survive export and API delivery.
Sample query
One cURL call returns a provenanced record.
curl -H "Authorization: Bearer $FONTEUM_KEY" \ "https://api.fonteum.com/fhir/r4/Location?_source=asc" \ | jq '._source, ._methodology, .meta.tag'
Response includes the FHIR resource body plus Fonteum provenance metadata on every record.
Dataset stats
Dataset: Care Compare ASCs Agency: CMS Category: Care quality Records: 5,956 certified facilities Last sync: 2026-04-01 Refresh cadence: Quarterly Freshness SLA: Within 48h of quarterly CMS release FHIR resource: Location Methodology: /methodology
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