Product

One API. Identity free, compliance verified, datasets on tap.

Query the identity of every US provider for free — then unlock the verified compliance record, field by field, each source-linked and timestamped. No star ratings, no ads: official records only.

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Free · identity layer

Every US provider, all specialties

Identity for 9,294,777 providers and counting from CMS NPPES — name, location, NPI, specialty — queryable by taxonomy code or classification name. Every response is screened against the OIG exclusion list, free.

• Identity fields, no charge
• OIG LEIE exclusion screening — free
• Free key in 30 seconds

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Paid · verified compliance

FDA, license, price — source-linked

The verified record for a vertical: LegitScript, state-license, and FDA screening plus published price, each field carrying its official source and the date we checked it. 869 providers in the verified tier today.

• FDA / LegitScript / license signals
• Published price + monthly range
• A source and a timestamp on every field

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Datasets

Bulk & snapshot exports

A structured, nationwide supply-side dataset in one schema — for roll-up analysis, diligence, and one-off exports. Priced by coverage and scope, not a flat headline.

• CSV + bulk export
• Scoped to your coverage needs
• Quote on request

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Query it

Ask by specialty, vertical, city, mode.

One REST API. The free identity layer answers “who are the providers” for any specialty nationwide; a key unlocks the verified compliance record for a vertical. JSON by default, CSV on request.

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GET /api/v1/providers

# Free: identity for any specialty, nationwide — plus OIG screening
curl "https://xcircl.com/api/v1/providers/?taxonomy=207Q00000X&state=CA" \
  -H "Authorization: Bearer YOUR_FREE_KEY"

# Paid: the verified record for a vertical (FDA, license, price + dates)
curl "https://xcircl.com/api/v1/providers/?vertical=glp1&state=CA" \
  -H "Authorization: Bearer YOUR_PAID_KEY"

How it works

Facts you can stand behind — verify, complete, refresh, surface.

Most directory data rests on star ratings and ad spend. Ours rests on official records, attached to a source and a date — the difference between data you display and data you can build a regulated product on.

Verify

Match identity to official registries (NPPES) and screen regulatory signals (FDA, OIG, LegitScript) against authoritative sources. A field is verified only with a source and a date.

Complete

Fill gaps from primary sources where we can. What we can’t source stays empty — never invented.

Refresh

Re-check signals over time and stamp each with when it was last verified, so staleness is visible, not hidden.

Surface

Expose every field with its provenance through the API and machine-readable layer, so humans and AI can cite it.

Verified coverage is still being built out as the source migration completes — we publish the real, live figures on coverage, never a claim of completeness we don’t yet have.

Build on facts, not guesses.

Get an API key in minutes, or talk to us about coverage and pricing.

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