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/Specialties/Oncology (Medical)/Page 9

Provider directory · By specialty

Oncology (Medical) provider records · page 9

CMS NPPES Oncology (Medical) provider records, paginated for crawlable discovery into canonical NPI citation pages.

Source: CMS NPPES NPI Registry — tracked specialty cache·Snapshot: 2026-05-06·Method: nppes-supply-by-state/v2026.05·ID: nppes-provider-directory/oncology/page-9

Showing 577-648 of 7,286 source-backed NPI records for Oncology (Medical) providers. 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 · page 9 of 102

  • NPI 1649346842
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1659637452
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1659804557
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1679530018
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1699792663
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1710140850
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1710925987
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1770519126
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1790893485
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1831432988
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1841308517
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1851355853
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1851485056
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1851590897
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1861482853
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1861531485
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1861933129
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1902193147
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1922242932
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1922260520
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1932914926
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1942236997
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1972552784
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1982098380
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1992266118
    Oncology (Medical) · San Francisco, CA
    207RX0202X
  • NPI 1235332925
    Oncology (Medical) · San Gabriel, CA
    207RX0202X
  • NPI 1609404870
    Oncology (Medical) · San Gabriel, CA
    207RX0202X
  • NPI 1740279264
    Oncology (Medical) · San Gabriel, CA
    207RX0202X
  • NPI 1063906063
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1114925542
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1154514677
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1457796070
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1487807111
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1487970547
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1518976042
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1821067281
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1871670703
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1871777573
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1891870317
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1942311386
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1982667846
    Oncology (Medical) · San Jose, CA
    207RX0202X
  • NPI 1346265436
    Oncology (Medical) · San Luis Obispo, CA
    207RX0202X
  • NPI 1477558435
    Oncology (Medical) · San Luis Obispo, CA
    207RX0202X
  • NPI 1992209381
    Oncology (Medical) · San Luis Obispo, CA
    207RX0202X
  • NPI 1497727465
    Oncology (Medical) · San Marcos, CA
    207RX0202X
  • NPI 1164985263
    Oncology (Medical) · San Mateo, CA
    207RX0202X
  • NPI 1326589581
    Oncology (Medical) · San Mateo, CA
    207RX0202X
  • NPI 1780741306
    Oncology (Medical) · San Mateo, CA
    207RX0202X
  • NPI 1215175070
    Oncology (Medical) · Santa Barbara, CA
    207RX0202X
  • NPI 1235240987
    Oncology (Medical) · Santa Barbara, CA
    207RX0202X
  • NPI 1295843738
    Oncology (Medical) · Santa Barbara, CA
    207RX0202X
  • NPI 1053321760
    Oncology (Medical) · Santa Cruz, CA
    207RX0202X
  • NPI 1255341962
    Oncology (Medical) · Santa Cruz, CA
    207RX0202X
  • NPI 1013570563
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1083106637
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1114319423
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1639210107
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1649632696
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1851664577
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1912014713
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1942317987
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1992972897
    Oncology (Medical) · Santa Monica, CA
    207RX0202X
  • NPI 1013018035
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1033201587
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1144412560
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1376633149
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1417047283
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1487743472
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1518055573
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1619051695
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1770743312
    Oncology (Medical) · Santa Rosa, CA
    207RX0202X
  • NPI 1174763262
    Oncology (Medical) · Simi Valley, CA
    207RX0202X
Previous provider recordsNext provider records

Back to Oncology (Medical) 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→