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CMS Market SaturationCMS Market Saturation & Utilization (State-County)
Centers for Medicare & Medicaid Services (CMS) · Tier-1 · research-only (never on individual profiles)
The CMS Market Saturation & Utilization (State-County) file is a program-integrity monitoring dataset. Per county, state, and nation, and per provider/supplier service type, it reports how saturated the local market is with Medicare-enrolled providers and how Medicare fee-for-service utilization is distributed, plus the CMS enrollment-moratorium flag for the geography. It is geography + service-type keyed — there is no individual provider NPI.
How this source shows up on Fonteum.
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.
What this source does NOT mean
Market saturation describes the supply of providers in a geography — it is not a quality measurement, not a statement about any individual provider, and a high or low saturation value is not a Fonteum judgment about access or care in that area.
Research and data questions this source supports.
- Resolve a county or state FIPS to its provider counts, beneficiary counts, and total Medicare payment by service type.
- Build a provider-supply map that surfaces where a service type is over- or under-represented relative to beneficiaries.
- Identify geographies under a CMS enrollment moratorium for a program-integrity study.
- Power an access-research surface combining market saturation with HRSA shortage-area designations.
Dataset size: 1,030,290 geography × service rows (2026-06-14 snapshot)
Per-field display contract.
Fields listed below show their configured `display_allowed` flag from the §94 provenance schema. Fields marked write-locked are captured for audit and are not rendered on profile pages.
Research-only — never on profiles
8 fieldsWhat we can’t infer from this source.
- Geography + service-type keyed — there is no individual provider NPI and no entity-graph linkage.
- Tier-1 — area-level research context only; never rendered on individual provider profiles.
- Market saturation is a supply signal, not a quality or access measurement.
- CMS suppresses small cells; suppressed counts are stored as null, not zero.
Authority, license, publisher cadence.
Authority
Centers for Medicare & Medicaid Services (CMS)
Tier
Tier-1 · research-only (never on individual profiles)
Publisher / configured cadence
Declared or configured cadence: Semiannual — CMS republishes the State-County file under a fresh release-dated path. Not evidence of the latest loaded source date.
License
U.S. government public-domain works. Free to use with attribution; explicit redistribution rights. License ↗
Official URL
Attribution requirement
Source: Centers for Medicare & Medicaid Services (CMS) — Market Saturation & Utilization (State-County) · Snapshot {YYYY-MM-DD}
What the source allows.
U.S. government public-domain works. CMS publishes the Market Saturation & Utilization State-County file as a no-auth bulk CSV at data.cms.gov with explicit redistribution rights. Snapshot and attestation fields must be read from the specific artifact; no provenance fact currently links deterministically to a signature.
What a single field looks like in the graph.
This worked example shows the provenance shape used when a surfaced field has populated source, last-checked, display-rule, and confidence metadata. Individual fields may omit unavailable values.
Field
Market saturation (area-level research context)
Sample value
County FIPS 06037 · Home Health · 142 providers · 38,400 FFS beneficiaries
Provenance line
Source: CMS Market Saturation & Utilization · Snapshot 2026-06-14 · Methodology cms-market-saturation/v1 · Display rule: geography-keyed — renders on dataset + research pages, never on individual profiles
Official API, bulk download, and Fonteum endpoints.
Official API / download
Fonteum surface
Common questions about CMS Market Saturation.
- What is the CMS Market Saturation & Utilization dataset?
- It is a CMS program-integrity monitoring dataset. Per county, state, and nation, and per provider/supplier service type, it reports how saturated the local market is with Medicare-enrolled providers and how Medicare fee-for-service utilization is distributed, plus the CMS enrollment-moratorium flag for the geography.
- Is this keyed to individual providers?
- No. The dataset is geography + service-type keyed — there is no individual provider NPI and no entity-graph linkage. The read API resolves on FIPS (2-digit state or 5-digit county).
- What is the enrollment moratorium flag?
- CMS can impose a temporary moratorium on new Medicare enrollments for a provider type in a geography to combat fraud. The moratorium field flags whether such a moratorium applies; it is a program-integrity control, not a quality signal.
- How often is the data published?
- CMS republishes the State-County file semiannually at data.cms.gov as a no-auth bulk CSV. Fonteum resolves the live CSV by the stable dataset UUID and attests each snapshot. As of the 2026-06-14 snapshot, Fonteum holds 1,030,290 geography × service rows spanning reference periods from 2020 to 2025.
- Is high market saturation good or bad?
- Neither — it is a supply signal. Market saturation describes how many providers of a service type operate in a geography relative to beneficiaries. It is not a quality measurement and not a Fonteum judgment about access or care in that area.
Where this source already shows up.
Related sources in the graph
- /sources → The generated source-catalog subset — documented datasets Fonteum cites.
- /data-provenance → The provider graph — pipeline diagram, source-family clusters, field-level provenance examples, display rules.
- /methodology → Documented sourcing, publisher cadence, observed freshness, and corrections policy.
- /editorial-policy → Independence, sourcing, conflicts, corrections, retractions.