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CMSWorkforce and accessUpdated 2026-06-14

CMS Market Saturation & Utilization

Provider market saturation and Medicare fee-for-service utilization per county, state, and nation by provider/supplier service type — a CMS program-integrity dataset. Geography-keyed; no provider NPI. Source: Centers for Medicare & Medicaid Services · 2026-06-14

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1,030,290
geography × service rows
As of 2026-06-14
CMS · 2026-06-14
2020–2025
Temporal coverage
Refreshed semiannual
CMS · 2026-06-14
Observation
FHIR resource
FHIR R4 · cms-market-saturation/v1
Fonteum methodology

FHIR Observation · Sample record

What a record looks like in the API response.

Sample record
{
  "resourceType": "Observation",
  "id": "msat-example",
  "_source": "cms-market-saturation",
  "_methodology": "cms-market-saturation/v1",
  "code": { "text": "Providers per geography" },
  "valueQuantity": { "value": 42, "unit": "providers" }
}

Every record carries _source, _methodology, a snapshot date, and a confidence tier. All fourteen provenance fields survive export and API delivery.

cURL
curl -H "Authorization: Bearer $FONTEUM_KEY" \
  "https://api.fonteum.com/fhir/r4/Observation?_source=market-saturation" \
  | jq '._source, ._methodology, .meta.tag'

Dataset facts

Dataset facts for CMS Market Saturation & Utilization
FieldValue
AgencyCenters for Medicare & Medicaid ServicesCMS · 2026-06-14
CategoryWorkforce and access
Records1,030,290 geography × service rowsCMS · 2026-06-14
Temporal coverage2020–2025
Refresh cadenceSemiannual
Freshness SLAWithin 7 days of CMS release
Last synced2026-06-14Updated 2026-06-14
FHIR resourceObservation
Methodologycms-market-saturation/v1
MeasuredNumber of providers, FFS beneficiaries, users, and total payment per geography × service type
Upstream sourcedata.cms.gov →

Get access

How to reach this dataset.

API access is operator-approved during the pilot. Reviewed within one business day. No charge during the pilot period.

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Federal Medically Underserved Area / Population (MUA/MUP) designations — service areas and populations with insufficient access to primary care.

HRSA
HRSA 340B Covered Entities →

HRSA 340B drug-pricing program covered entities — hospitals, FQHCs, and clinics enrolled in the federal 340B discount program. Schema and provenance are live; the first OPAIS export snapshot is pending, so this table currently holds 0 rows.

Browse all datasets →

Citations

  1. Centers for Medicare & Medicaid Services — CMS Market Saturation & Utilization (upstream source)
  2. Fonteum methodology (cms-market-saturation/v1)
  3. Editorial & licensing policy

The substrate, by the numbers

9.2Mgraph entitiesProviders, organizations, owners, and facilities
12.5Mlinked identifiersNPIs, CCNs, LEIs and more, resolved to entities
4.7Mgraph edgesSource-attested relationships between entities
44federal source familiesDistinct CMS, OIG, HRSA, FDA and peer datasets
33dataset pagesCitable, downloadable /data catalog pages
48reproducible 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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