Skip to content
FonteumThe Graph

By use case

Exclusion & monitoring (self-serve)Free roster screen — no accountExclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligence

By buyer

Compliance & riskJournalists & newsroomsDevelopers & AI teams

By industry

HealthcareProviders & facilitiesSanctionsOFAC / EU / UK / UN / OIG / SAMFederal contractingSAM · USASpending · FAPIIS

The capability layer

APIREST + bulk accessFor AI agentsModel Context Protocol serverFHIR R4 APIBulk exportAudit packSigned report artifacts; source facts remain separately citedReconciliationSource-vs-source diffsAI answers with sourcesHow records link upHistoryRetained versions for named sources

The differentiator

Coverage & sourcesThe catalogFreshnessMethodologyCare CompareFacility qualityAI answers, comparedBrowse all datasets →
Research

The dev on-ramp

DocsAPI referenceConnect your AI agent (MCP)One-paste installFHIR sandboxLive API surfaceQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inFree roster screen →Get a signed certificate →

Solutions

Exclusion & monitoring (self-serve)Exclusion & sanctions screeningCredentialing & provider-data enrichmentAudit evidence & defensible programsProvider data for AI / RAGM&A & network diligenceCompliance & riskJournalists & newsroomsDevelopers & AI teamsHealthcareSanctionsFederal contracting

Platform

APIFor AI agentsFHIR R4 APIBulk exportAudit packReconciliationAI answers with sourcesHow records link upHistory

Data

Coverage & sourcesFreshnessMethodologyCare CompareAI answers, comparedBrowse all datasets →
Research

Developers

DocsAPI referenceConnect your AI agent (MCP)FHIR sandboxQuickstartStatusChangelogSDKs & integrations
Pricing
Sign inFree roster screen →Get a signed certificate →
Providers/States/Massachusetts/Page 6

Provider directory · By state

Massachusetts provider records · page 6

CMS NPPES provider records in Massachusetts, paginated for crawlable discovery into canonical NPI citation pages.

Source: CMS NPPES NPI Registry — tracked specialty caches·Snapshot: 2026-05-06 – 2026-05-07·Method: nppes-supply-by-state/v2026.05·ID: nppes-provider-directory/massachusetts/page-6

Showing 361-432 of 13,053 source-backed NPI records for Massachusetts. The list is drawn from the tracked CMS NPPES specialty caches and links directly to canonical provider citation pages.

CMS NPPES snapshot 2026-05-06 – 2026-05-07 · page 6 of 182

  • NPI 1588152151
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588616809
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588629505
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588640437
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588644504
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588649560
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588655195
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588869135
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1588958722
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1598183758
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1598407520
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1598702177
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1598703860
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1598721748
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1609032564
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1609034230
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1609042753
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1609294636
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1609903079
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619003324
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619004074
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619133576
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619176732
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619401742
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619908902
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619909132
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1619934924
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1629042668
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1629084207
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1629834411
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639135023
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639187479
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639188840
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639247539
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639518376
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1639562267
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649217696
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649257080
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649299744
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649526070
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649666462
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1649705542
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1659339588
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1659369460
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1659494979
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1659720274
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669434585
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669462180
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669594925
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669768123
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669810552
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1669998688
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1679464697
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1679556971
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1679679997
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1679700751
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1679835722
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689168312
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689614190
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689651416
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689664583
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689824013
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1689850752
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699189944
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699707117
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699731844
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699742346
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699757062
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699765875
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699805127
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699850867
    Cardiology · Boston, MA
    207RC0000X
  • NPI 1699933374
    Cardiology · Boston, MA
    207RC0000X
Previous provider recordsNext provider records

Back to Massachusetts provider summary

What’s on file, by the numbers

Platform snapshot · 2026-07-15

13.4Mproviders & companiesProviders, organizations, owners, and facilities on file
26.2Msource-linked factsSource-linked field facts in the dated platform snapshot
—sources liveCrosswalk-resolved sources with a proved content transition in the preceding 45 days
111sources integratedActive registry rows; integration does not establish a load
13state Medicaid jurisdictionsDistinct states represented in the state-exclusions serving table

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

Published figures name their source and date.

Source and date

Published research identifies its government file and observation date. Source-file SHA-256 coverage is disclosed separately; facts do not currently link deterministically to signatures.

Reproducible SQL

Each study ships the exact query behind its figures, run against the same dated copy of the federal file we used. Re-run it yourself.

Daily observations

The platform records table row counts daily. Those observations detect local drift; they do not imply that an upstream publisher released or Fonteum ingested new data that day.

Named medical review

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

Read the full provenance and attestation methodology →

Fonteum
Platform
Platform overviewAPIFor AI agents (MCP)FHIR R4 APIBulk exportAudit packReconciliationAI answers with sourcesHow records link upHistory
Solutions
All solutionsExclusion & sanctions screeningCredentialing & enrichmentAudit evidenceProvider data for AI / RAGUse casesM&A & network diligenceCompliance & riskJournalists & newsroomsDevelopers & AI teams
Data & sources
Coverage & sourcesBrowse all datasetsState Medicaid exclusionsFreshnessMethodologyCare CompareNursing homesRecall recordsSanctions screeningOIG LEIE listOwnershipStaffingDeficienciesSpecial Focus Facilities
Federal contracting
OverviewAwards during active exclusionFederal debarment scorecardProcurement questionsContractor lookup8(a) certification guide
Developers
Developer hubDocsAPI referenceQuickstartStatusChangelogSDKs & integrationsWebhooks
Research & guides
Research hubLearnHow it worksGuidesHealthcare provider dataExclusion & sanctions screeningProvider credentialing dataHealthcare data for AIHospital margin gapProvider access gapsGlossaryComparisonsSourced data vs plain LLM answersCitationsManifestoWhy Fonteum
Company
AboutPressCustomersPricingContactEditorial policyCorrections
Trust & legal
TrustTrust markQualitySecurityPrivacy policyTerms of serviceAPI termsMedical disclaimer

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

© 2026 Fonteum LLC. All rights reserved.

·hello@fonteum.com

A public-records graph that exposes source and observation metadata where supplied.

Fonteum's provenance ledger contained 26.2M source-linked facts on July 12, 2026. All but 14 carried a source-file SHA-256; 0 linked deterministically to a signature. Inspect a supplied snapshot id at fonteum.com/verify · source-mark coverage and limitations.
Request access→