Provider directory · By specialty

Healthcare providers — Oncology (Medical)

CMS NPPES registration records for the Oncology (Medical) specialty, with field-level provenance back to the federal source.

Source: CMS NPPES NPI Registry — supply by state·Snapshot: 2026-05-06·Method: nppes-supply-by-state/v2026.05·ID: nppes-supply/oncology

7,286Active Oncology (Medical) providers (NPPES)As of 2026-05-06 · across all 50 states + DC

7,286 active Oncology (Medical) providers are registered in the CMS NPPES NPI Registry across all 50 states and the District of Columbia, snapshotted 2026-05-06. Each record carries field-level provenance back to its federal source.

NPPES dataset · Methodology · Browse by state

The substrate, by the numbers

44federal source familiesDistinct CMS, OIG, HRSA, FDA and peer datasets

33dataset pagesCitable, downloadable /data catalog pages

47reproducible studiesEach shipping the SQL behind its figures

Built on the authoritative federal record

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FDA
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NUCC
Census
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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.

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