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The source library

federal source families

Every public-record source that powers Fonteum.

Every fact Fonteum displays cites a source, a last-checked date, and a limitations sentence. This is the inventory — what each source is, what we use it for, and what it does not mean.

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44federal source familiesUnique families powering the provider graph.
48registered sourcesSources with a detail page on /sources.
35dataset pagesLive at /data with schema + download.
Live · 14Research-only · 31Deferred · 3

48 sources registered. 19 are Tier-2 profile-enrichment (data appears on individual provider profiles when matched). 28 are Tier-1 research-only (aggregates only). 0 pending a public-records request. 1 first-party Fonteum Research.

Healthcare graph

Healthcare graph

Provider identity + Medicare-billing-active enrollment.

  • Tier-2 · profile-enrichment

    CMS NPPES NPI Registry

    Source:CMS NPPES·Checked May 2026

    We match dermatology and chiropractic practice listings to NPPES records and surface the NPI, taxonomy code, taxonomy description, and NPI enumeration date on the profile. Each value carries source attribution + last-checked date + the §95 limitations sentence.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS PECOS Medicare Provider Enrollment

    Source:CMS PECOS·Checked May 2026

    We cross-reference NPPES-matched healthcare practices against PECOS to surface a Medicare-billing-active indicator on the profile, alongside the CMS provider type and enrollment state. The display module is gated to medical archetypes only.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    OIG LEIE (List of Excluded Individuals/Entities)

    Source:OIG LEIE·Checked May 2026

    Exclusion status check on provider profiles: any NPI in oig_leie_exclusions surfaces a compliance flag on the profile with exclusion type, date, and reinstatement date where applicable. Powers the brand-hub /sanctions surface.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Hospital Price Transparency Enforcement

    Source:CMS Price Transparency·Checked May 2026

    Powers the /research/hospital-price-transparency-compliance-2026 flagship study and the /data/price-transparency dataset page. Enables per-state enforcement density analysis, CMP recipient identification, and compliance trend mapping.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Order and Referring

    Source:CMS Order & Referring·Checked May 2026

    Per-NPI Medicare order/refer eligibility, available via the read API and the dataset page. The NPI -> entity-graph link is a separate, gated follow-up — this source writes no entity rows — so eligibility does not yet render on individual provider profiles.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    CMS Opt Out Affidavits

    Source:CMS Opt Out·Checked May 2026

    Per-practitioner Medicare opt-out status, available via the read API and the dataset page. The NPI -> entity-graph link is a separate, gated follow-up — this source stamps no entity_id — so opt-out status does not yet render on individual provider profiles.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    CMS Medicare Revalidation Due Date List

    Source:CMS Revalidation·Checked May 2026

    Per-enrollment Medicare revalidation due dates, available via the read API and the dataset page. The NPI -> entity-graph link is a separate, gated follow-up — this source stores revalidation records, not resolved provider-graph entities — so it does not yet render on individual provider profiles.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    Medicare Physician & Other Practitioners — by Provider and Service

    Source:Medicare Physician & Service·Checked May 2026

    Per-NPI procedure-level Medicare utilization and payment, available via the read API and the dataset page. The NPI -> entity-graph link is a separate, gated follow-up — this source writes no entity rows — so utilization does not yet render on individual provider profiles.

    Research-onlyRead source page →
  • Tier-1 · research-only

    SAM.gov System for Award Management Exclusions

    Source:SAM.gov Exclusions·Snapshot May 2026

    Aggregate program-integrity research and the 'excluded-anywhere' exclusion ring. The /data and /sources pages report classification and excluding-agency breakdowns only; the per-record SAM lookup is part of the brand-hub exclusion surface, not these catalog pages.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Civil Money Penalties

    Source:CMS Civil Money Penalties·Snapshot May 2026

    Aggregate facility program-integrity research and the 'compromised-anywhere' enforcement signal. The /data and /sources pages report penalty-type, fine-total, and facility-count breakdowns only — no facility is named.

    Research-onlyRead source page →
  • Tier-1 · research-only

    OIG Corporate Integrity Agreements

    Source:OIG CIA·Snapshot May 2026

    Aggregate compliance-monitoring research and the 'compromised-anywhere' enforcement signal. The /data and /sources pages report status and agreement-type breakdowns only — no entity is named.

    Research-onlyRead source page →
  • Tier-1 · research-only

    State Professional Licensing & Disciplinary Records

    Source:State Licensing·Snapshot May 2026

    Aggregate state-credentialing research and a future 'licensed/sanctioned-anywhere' screen that complements the federal exclusion ring — a provider sanctioned by a state board can look clean on the federal LEIE. The /data and /sources pages report record counts and per-state coverage only; no licensee is named on these catalog surfaces.

    Research-onlyRead source page →
Care quality graph

Care quality graph

CMS facility quality data — nursing homes, home health, hospice, dialysis.

  • Tier-1 · research-only

    CMS Provider of Services (POS) File

    Source:CMS POS·Snapshot May 2026

    Deterministic CCN identity backbone. Every cross-source join (Care Compare, PBJ, Deficiencies, LEIE, ownership) hangs off this CCN. Surface usage: brand-hub Care Compare modules + audit-pack export.

    LiveRead source page →
  • Tier-1 · research-only

    CMS Care Compare — Home Health Care Agencies

    Source:CMS Care Compare — HH·Snapshot May 2026

    Identity backbone for Home Health Agencies (POS QIES does not cover HH). Drives the brand-hub `/care-compare/home-health` module. State-level rollups and per-agency pages ship in a follow-on wave.

    LiveRead source page →
  • Tier-1 · research-only

    CMS Care Compare — Hospice General Information

    Source:CMS Care Compare — Hospice·Snapshot May 2026

    Enrichment for hospice identity (POS QIES already covers hospices as PRVDR_CTGRY_CD=12; Care Compare adds ownership_type and cms_region). Drives the brand-hub `/care-compare/hospice` module. The May 2026 Training-Family-to-Care measure removal is documented in the methodology; quality-measure ingestion is a follow-on wave.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Care Compare — Dialysis Facility

    Source:CMS Care Compare — Dialysis·Checked May 2026

    Identity backbone for ESRD facilities (POS QIES doesn't cover dialysis). Drives the brand-hub `/care-compare/dialysis` module. Chain-ownership concentration (~90% chain-owned) is relevant journalism material.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Care Compare — ASC Quality Measures (Facility)

    Source:CMS Care Compare — ASC·Checked May 2026

    Identity backbone for ASC CCNs (POS QIES coverage incomplete). Deterministic NPI bridge (no NPPES fuzzy match needed) — match-confidence improvement vs other Care Compare datasets. Drives the brand-hub `/care-compare/asc` module. ASC-12 (7-day risk-standardized hospital visit rate) is the headline quality measure.

    LiveRead source page →
  • Tier-1 · research-only

    CMS Care Compare — Hospital General Information (data-only)

    Source:CMS Care Compare — Hospitals·Snapshot May 2026

    Audit-pack export continuum-completeness + cross-source resolver enrichment for hospital CCNs. Buyer pitch leverage rather than consumer SEO surface.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Care Compare — LTACH General Information (data-only)

    Source:CMS Care Compare — LTACH·Snapshot May 2026

    Audit-pack export continuum-completeness for post-acute care continuum (acute hospitals → LTACH → IRF → SNF → HH → Hospice).

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Care Compare — IRF General Information (data-only)

    Source:CMS Care Compare — IRF·Snapshot May 2026

    Audit-pack export continuum-completeness; IRF CCN distinction is doctrinally relevant for cross-source joins.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    CMS Care Compare

    Source:CMS Care Compare·Checked May 2026

    Today: four published research snapshots — nursing homes, home health, dialysis, hospice — plus the source pack staged for future Tier-2 facility pilots. CMS overall star ratings and component sub-ratings render only when a facility-level vertical launches; until then the data is research-only.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Payroll-Based Journal (PBJ) Daily Nurse Staffing

    Source:CMS PBJ·Snapshot May 2026

    Drives the brand-hub `/staffing` editorial surface. Per-facility daily-granularity nurse-staffing — the only CMS dataset that exposes this layer at facility resolution.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS SNF All Owners (PE / REIT / Chain Layer)

    Source:CMS SNF All Owners·Snapshot May 2026

    Drives the brand-hub `/ownership` surface. Direct backbone for the published flagship study at /research/private-equity-nursing-home-ownership-analysis. Fonteum surfaces missingness via DataAvailabilityState: OWNERSHIP_PCT_MISSING — the gap is the data product.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS NH Health Deficiencies (per-citation)

    Source:CMS NH Deficiencies·Snapshot May 2026

    Drives the brand-hub `/deficiencies` surface. Per-citation transparency layer; NH Penalties sub-join surfaces in audit-pack export only.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS NH Penalties (sub-join of Deficiencies)

    Source:CMS NH Penalties·Snapshot May 2026

    Sub-join. Audit-pack export field for /deficiencies methodology-versioned customer exports.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Special Focus Facility (SFF) Program List

    Source:CMS SFF·Snapshot May 2026

    Drives the brand-hub `/special-focus-facilities` surface. Per-facility SFF status flag joins to Care Compare NH Provider Information via CCN.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    CMS Quality Payment Program (MIPS)

    Source:CMS QPP MIPS·Checked May 2026

    MIPS composite scores and payment adjustments render on individual provider profiles (NPI-matched) with full provenance (source · performance year · methodology version). Powers the brand-hub clinician-quality module and the dbt QPP mart. Data is surfaced as published by CMS; Fonteum does not independently score, weight, or rank clinicians.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS HCRIS Hospital Cost Reports (form CMS-2552-10)

    Source:CMS HCRIS Hospitals·Checked May 2026

    Tier-2 profile-enrichment for Medicare-certified hospitals. Headline fields render on hospital profile pages with full provenance (source · vintage · fiscal-year boundary). Powers the brand-hub Hospital Margin Gap analysis (Tier 1 #23) and the FHIR Organization.contained financial extensions (queued separately).

    LiveRead source page →
  • Tier-2 · profile-enrichment

    HRSA Uniform Data System (UDS)

    Source:HRSA UDS·Checked May 2026

    Tier-2 research enrichment for federally qualified health centers. Awardee-level patient population (Medicaid / uninsured share), staffing FTEs, and clinical-quality-measure rates support FQHC access and quality studies, joined to HRSA HPSA shortage designations. The /data and /sources pages report aggregate counts and per-grant-year breakdowns only — no awardee is named on these catalog surfaces.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Provider of Services (POS) — iQIES Facility Registry

    Source:CMS POS·Checked May 2026

    The POS file provides the CCN backbone for all Care Compare facility joins. Facility name, type, address, state, and participation/termination dates render on Care Compare brand-hub pages with full provenance (source · quarter · methodology version). No NPI is included in the iQIES POS export; NPI cross-reference is deferred to the NPPES join wave.

    LiveRead source page →
  • Tier-2 · profile-enrichment

    CMS Medicare Shared Savings Program ACO Participants

    Source:CMS MSSP ACO·Checked May 2026

    Surfaces ACO id, participant legal business name, and performance year on the dataset page and via the read API. The public CMS file carries no participant TIN or NPI (those are restricted to ResDAC), so entity-graph linkage is name-keyed and deferred — ambiguous matches are held.

    Research-onlyRead source page →
Research / economic / workforce

Research / economic / workforce

Tier-1 federal aggregates — never attached to individual profiles.

  • Tier-1 · research-only

    HRSA Health Professional Shortage Areas (HPSA)

    Source:HRSA HPSA·Snapshot May 2026

    Tier-1 research-only context for /research pages discussing healthcare access. HRSA HPSA designations cover Primary Care + Dental + Mental Health only; they do NOT cover dermatology, chiropractic, or specialty care.

    Research-onlyRead source page →
  • Tier-1 · research-only

    BLS Occupational Employment & Wage Statistics (OEWS)

    Source:BLS OEWS·Snapshot May 2026

    Tier-1 research-only context for /research pages that discuss workforce supply, wage benchmarks, or per-capita density. OEWS data appears in study commentary and methodology footnotes — it does NOT attach to individual provider profiles.

    Research-onlyRead source page →
  • Tier-1 · research-only

    BEA Regional Economic Accounts

    Source:BEA Regional·Snapshot May 2026

    Tier-1 research-only context for /research pages that discuss regional spending, healthcare-services GDP, or per-capita income. BEA data appears in study commentary — it does NOT attach to individual provider profiles.

    Research-onlyRead source page →
  • Tier-1 · research-only

    U.S. Census Bureau — State Population Estimates (2024 vintage)

    Source:US Census·Snapshot May 2026

    Per-capita denominators in research studies (e.g. 'X dermatologists per 100,000 residents'). Tier-1 — appears in study tables and methodology, never on individual provider profiles.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    HRSA Health Professional Shortage Areas (HPSA)

    Source:HRSA HPSA Shortage Areas·Checked May 2026

    Tier-2 area-level context for /data and /research pages on healthcare access. HPSA designations are keyed to geographies and facilities, not to individual provider NPIs; Fonteum surfaces designation type, discipline, HPSA score, status, and geography on the dataset page.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    HRSA Medically Underserved Areas / Populations (MUA/MUP)

    Source:HRSA MUA/MUP·Checked May 2026

    Tier-2 area-level context for /data and /research pages on primary-care access. MUA/MUP designations are keyed to service areas and populations, not to individual provider NPIs; Fonteum surfaces designation type, IMU score, status, and geography on the dataset page.

    Research-onlyRead source page →
  • Tier-2 · profile-enrichment

    HRSA 340B OPAIS Covered Entities

    Source:HRSA 340B OPAIS·Checked May 2026

    Will surface 340B covered-entity identity (340B ID, entity name, entity type, participation status, location) on the dataset page once the first OPAIS export lands. NPI / CCN cross-link into the entity graph is deferred to a gated follow-up — ambiguous matches are held, never written.

    DeferredRead source page →
  • Tier-1 · research-only

    CMS Market Saturation & Utilization (State-County)

    Source:CMS Market Saturation·Snapshot May 2026

    Tier-1 area-level context for /data and /research pages on provider supply and Medicare utilization by geography. Fonteum surfaces provider counts, beneficiary counts, average users per provider, and total payment per geography × service type, resolvable by FIPS.

    Research-onlyRead source page →
  • Tier-1 · research-only

    NUCC Health Care Provider Taxonomy

    Source:NUCC Taxonomy·Snapshot May 2026

    Tier-1 reference code set for resolving a taxonomy code to its grouping, classification, specialization, and display name — used to label NPPES-sourced taxonomy across research and data surfaces, and queryable per code. There is no NPI or entity linkage; this is a code set, not a provider record.

    Research-onlyRead source page →
Research activity

Research activity

Federal clinical-trials and grant-funding records — name-keyed; NPI / entity-graph linkage deferred.

  • Tier-1 · research-only

    ClinicalTrials.gov Studies

    Source:ClinicalTrials.gov·Snapshot May 2026

    Tier-1 research-only context for studies on research activity and key-opinion-leader networks. Fonteum surfaces study title, status, conditions, sponsor, and overall officials at the aggregate level. Records are name-keyed (PIs and sponsors by name / affiliation); there is no NPI in the source, and NPI / entity-graph linkage is deferred — ambiguous matches are held.

    Research-onlyRead source page →
  • Tier-1 · research-only

    NIH RePORTER Projects

    Source:NIH RePORTER·Snapshot May 2026

    Tier-1 research-only context for studies on research activity and grant-funding networks. Will surface project title, fiscal year, award amount, principal investigators, and awardee organization at the aggregate level. Records are name-keyed (PIs by name; awardee org as affiliation); there is no NPI in the source, and NPI / entity-graph linkage is deferred — ambiguous matches are held.

    DeferredRead source page →
Life sciences

Life sciences

FDA drug & device safety, approvals, and drug-spend reference — manufacturer- and product-keyed; no provider NPI.

  • Tier-1 · research-only

    FDA Enforcement Reports (Drug + Device Recalls)

    Source:FDA Enforcement·Snapshot May 2026

    Aggregate research context on drug and device recalls, keyed to the recalling firm. The firm name is normalized so an Open Payments manufacturer organization can be cross-referenced in a separate, gated follow-up; that entity-graph link is deferred and ambiguous matches are held, not written.

    Research-onlyRead source page →
  • Tier-1 · research-only

    Drugs@FDA (Approved Drug Products)

    Source:Drugs@FDA·Snapshot May 2026

    Aggregate drug-product reference, keyed to the sponsor / manufacturer (name-normalized for a deferred Open Payments cross-link). Fonteum surfaces the approved-product identity and marketing status; the entity-graph link is held for ambiguous matches, never written.

    Research-onlyRead source page →
  • Tier-1 · research-only

    FDA National Drug Code (NDC) Directory

    Source:FDA NDC Directory·Snapshot May 2026

    Will surface NDC-level drug-product reference (labeler name-normalized for a deferred Open Payments cross-link) once the first snapshot lands. Until then the dataset page renders an honest empty state — figures populate after the operator runs the NDC ingest.

    DeferredRead source page →
  • Tier-1 · research-only

    FDA Device Establishment Registration & Listing

    Source:FDA Establishment·Snapshot May 2026

    Aggregate device-firm reference, keyed to the registered establishment (name-normalized for a deferred Open Payments cross-link). Fonteum surfaces the establishment identity and type; the entity-graph link is held for ambiguous matches, never written.

    Research-onlyRead source page →
  • Tier-1 · research-only

    CMS Medicare Part D Spending by Drug

    Source:CMS Part D Spending·Snapshot May 2026

    Tier-1 drug-level Medicare Part D spending reference for /data and /research pages, keyed on brand × generic × manufacturer. The read API resolves on the brand name. There is no NPI and no entity-graph linkage.

    Research-onlyRead source page →
First-party research

First-party research

Fonteum's own published research snapshots.

  • First-party · Fonteum Research

    Fonteum Research Snapshots

    Source:Fonteum Research·Checked May 2026

    Hosting Fonteum's own research deliverables: state-level CMS Care Compare snapshots, healthcare specialty supply studies (dermatology, chiropractor, NPPES specialty factory), and provider-supply benchmarks. Renders on /research and /press; never overwrites federal source attribution on a per-field basis.

    LiveRead source page →
Excluded sources

Restricted, paid, or excluded data sources.

Sources we considered and explicitly do not use, with the honest reason. Restricted-distribution data, paid licensing products, and unverifiable backfills do not enter the graph; their absence is a doctrine choice, not an oversight.

  • NMLS Consumer AccessNot used

    Nationwide Multistate Licensing System (Conference of State Bank Supervisors)

    Mortgage / financial-services licensing portal. Per its terms, NMLS data is not available for bulk redistribution and the consumer-access portal is read-only. Fonteum does not display individual MLO records sourced from NMLS; mortgage-vertical profiles render only the operator-supplied data.

  • State Bar associationsNot used

    Per-state bar associations (CA, FL, TX, NY, IL, etc.)

    Per-state attorney licensing data is restricted across most states (terms vary; many forbid redistribution or commercial display). Fonteum legal verticals do not render bar-membership status as a sourced field; users are routed to the relevant state bar's own lookup tool.

  • ABMS / CertiFacts (board certification)Not used

    American Board of Medical Specialties / CertiFacts

    Board-certification lookup is a paid licensed product with restrictive redistribution terms. Fonteum does not display ABMS board-certification status as a sourced field. The §95 NPPES limitations sentence directs users to the relevant state medical board or the ABMS / AOA registries to confirm credentials directly.

  • Google Places / Google Business Profile (backfill)Not used

    Google

    We do not use Google Places / GBP as a data backfill for provider directories. Where a study's universe needs to be expanded, we expand from federal/state public records (CMS NPPES, CMS Care Compare, state contractor boards). Padding the index with Places listings would import unverifiable claims and break the source-cited contract.

See also
  • /data-provenance → The provider graph — pipeline diagram, source-family clusters, field-level provenance examples, display rules.
  • /methodology → Network-wide sourcing, refresh cadence, and corrections policy.
  • /research → Tier-1 dated aggregates published from the source graph.
  • /editorial-policy → Independence, sourcing, conflicts, corrections, retractions.
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Last updated: 2026-05-27

Built on the authoritative federal record

The primary sources, named on every page.

These are the federal agencies whose public datasets Fonteum ingests and attributes — the issuing authorities, not customers or partners. Every figure on the site links back to one of them.

  • CMS
  • HHS-OIG
  • HRSA
  • FDA
  • NLM
  • NUCC
  • Census
  • BLS
  • BEA

See the full source registry, with license and refresh cadence for each →

Reproducible by design

Every figure traces to its federal source.

14-tuple provenance

Every rendered fact ties to a source URL, dataset ID, snapshot date, row key, and SHA-256 — the full chain-of-custody record.

Reproducible SQL

Each study ships the exact query behind its figures, run against the cited federal snapshot. Re-run it yourself.

Daily reconciliation

Published counts are reconciled against the upstream federal datasets on a daily cadence, with drift logged.

Named medical review

Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

Read the full provenance and attestation methodology →

Two doors

Use the free API and open data

Query providers, facilities, sanctions, and quality scores — each field carrying its federal source. Self-serve, no call to start.

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Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

© 2026 Fonteum LLC. All rights reserved.

The U.S. healthcare graph AI can cite — every fact carries its source.

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The substrate, by the numbers

44federal source familiesDistinct CMS, OIG, HRSA, FDA and peer datasets
35dataset pagesCitable, downloadable /data catalog pages
13reproducible studiesEach shipping the SQL behind its figures