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CMS & Medicare Process Explainers

How US Healthcare Regulation Works

Step-by-step process walkthroughs built on primary federal sources. Each page explains a regulatory or data pipeline process — from the survey that grants Medicare certification to the enforcement chain that produces a civil money penalty — with citations, step-numbered flows, and field-level provenance.

  • Medicare Certification · CMS Long-Term Care
    How Nursing Homes Get Medicare-Certified: Survey, Deficiency, CCN Issuance, and Ongoing Reporting

    A step-by-step walkthrough of the federal process by which a nursing home receives Medicare certification — from initial application and state survey to CCN issuance and annual recertification requirements.

  • CMS 5-Star Rating · Care Compare
    How the CMS 5-Star Nursing Home Rating Is Calculated: Health Inspections, Staffing, Quality Measures, Weights, and Cutpoints

    CMS calculates its nursing home 5-star rating from three equally-weighted domains: health inspection results, staffing hours, and quality measure scores. This page explains the formulas, data sources, and cutpoints used to derive each domain rating and the composite.

  • CMS Care Compare · Federal Data Pipeline
    How CMS Care Compare Nursing Home Data Flows: Source Datasets, Refresh Cadence, and What Gets Published vs. Withheld

    CMS Care Compare draws from multiple underlying datasets — survey deficiencies, PBJ staffing, MDS quality measures, and PECOS ownership — on different refresh cadences. This explainer maps each data feed to its source, publication delay, and suppression rules.

  • Nursing Home Ownership · CMS Transparency
    How Nursing Home Ownership Is Disclosed to CMS: PECOS, Cost Reports, the New Transparency Rule, and What Still Falls Through the Gaps

    A step-by-step guide to how nursing home operators disclose ownership to the federal government — through PECOS enrollment, CMS-2540 cost reports, change-of-ownership filings, and the 2024 ownership transparency rule — with an explanation of what is still not captured.

  • CMS Enforcement · Civil Money Penalties
    How Civil Money Penalties Work in Medicare-Certified Nursing Homes: Triggers, Escrow, IDR, Escalation, and Public Reporting

    CMS can impose civil money penalties on nursing homes for deficiencies at or above scope-and-severity level G. This explainer walks through how penalties are triggered, calculated, placed in escrow, contested via IDR/IIDR, and eventually reported publicly on Care Compare.

Related: Research studiesLearn hubGlossaryData sources

The substrate, by the numbers

9.2Mgraph entitiesProviders, organizations, owners, and facilities
15.7Mlinked identifiersNPIs, CCNs, LEIs and more, resolved to entities
5Mgraph edgesSource-attested relationships between entities
44federal source familiesDistinct CMS, OIG, HRSA, FDA and peer datasets
35dataset pagesCitable, downloadable /data catalog pages
65reproducible studiesEach shipping the SQL behind its figures

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.

Explore the API →Browse the data catalog →

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

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

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