API · HL7 FHIR R4
HL7 FHIR R4. NPI-keyed.
Practitioner, Organization, Location, Coverage, HealthcareService. US Core 6.1.0. SMART on FHIR auth. p99 under 300ms on single-record lookups.
Pilot access is operator-approved · No charge during pilot
One call. Four languages.
Every response carries provenance metadata.
_source names the federal dataset. _methodology pins the pipeline version. _confidence indicates the match tier.
5
FHIR resources
US Core 6.1.0 compliant
13
Datasets
CMS + HHS-OIG only
<300ms
p99 latency
Single-record lookups
v4
Provenance fields
On every response
Five FHIR resources · US Core 6.1.0
Every resource carries row-level provenance.
Authentication
Bearer token · SMART on FHIR.
Production: SMART on FHIR client credentials flow. Pilot: Bearer token issued by the operator within 1 business day.
Base URL: https://api.fonteum.com/fhir/r4
OpenAPI spec: /docs/api
Get access
Pilot access in 1 business day.
Submit a request with your use case and expected query volume. Operator-approved. No charge during the pilot period.