The U.S. healthcare graph
U.S. healthcare providers, resolved.
Every provider, facility, and owner — sourced from 23 federal source families and cited field by field so AI agents and data teams can trust it.
Resolved, not scraped
One identity stitched across 23 federal source families — deduped, not a pile of rows.
Cited field by field
Every value carries its federal source, release date, and redistribution basis.
Signed & re-derivable
SHA-256 + Ed25519 chain on every record — verify it against the source yourself.
How it works
Three steps from query to citable record.
Search an entity
Look up any NPI, CCN, or provider name. The Graph resolves the entity across every federal source.
Get the resolved record
Every field shows which source it came from — NPPES, PECOS, OIG LEIE, Care Compare. No black box.
See the proof or cite it
Each record carries a SHA-256 hash and a signed attestation chain. Re-derive it yourself or cite it directly.
The Differ
The data is open. The chain is auditable.
The Differ places our resolved record beside the raw NPPES entry — field by field, source by source. Every discrepancy is visible.
NPI 1073662946 · CMS NPPES · 2026-05 · public record
Live data
23 federal source families. All public record. All cited.
Every dataset carries its source, release date, and a freshness cadence — re-published with field-level provenance, ready for your agent.
Attest
Every claim has a chain.
Paste any claim ID and watch the full signed chain — from the federal source file to the Ed25519 signature. Re-derive the hash yourself; nothing changed.
Why it's defensible
Built on a resolved, bitemporal, signed graph.
Entity resolution
One identity across NPPES, PECOS, CCN, and Care Compare — not duplicate rows.
Bitemporal history
Every value carries what was true and when we knew it — recall any record as of any past date.
Per-cell provenance
Source on every number, not the page. Each cell ties to its federal file and release.
Open & citable
Public and AI-native by design — the source AI cites, which a paywalled competitor structurally can't be.