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Fonteum Data GlossaryProvider

Type 1 NPI: Definition and Healthcare Context

Full name: Individual National Provider Identifier

A Type 1 NPI is assigned to an eligible individual healthcare provider. An enumerated individual is eligible for one Type 1 NPI regardless of practice locations or organizational affiliations. The NPI is an administrative identifier and does not prove that the individual holds a current license or credential.

Source file
Not reported
Published
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Retrieved
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Snapshot
Not retained for this reference page
Data as of
Not reported
Last updated: 2026-07-11Reviewed by: Dr. Jennifer Montecillo, MD — Gullas College of Medicine, 2019. Non-practicing medical reviewer.

How it’s used

  • CMS NPPES NPI Registry: Type 1 records are distinguished by the entity_type_code field, enabling queries limited to individual practitioners.
  • CMS PECOS Medicare Provider Enrollment: Type 1 NPIs are required for individual practitioner enrollment in Medicare.
  • CMS Open Payments: physician payment disclosures use Type 1 NPIs to identify individual covered recipients.

Frequently asked questions

What is a Type 1 NPI?
A Type 1 NPI is assigned to individual health care providers — people who personally provide health care services, such as physicians, dentists, and nurses.
Can an individual have more than one NPI?
An enumerated individual is eligible for one Type 1 NPI, even if they practice in multiple locations or specialties.
What is the difference between Type 1 and Type 2 NPI?
Type 1 NPIs identify individual providers (persons). Type 2 NPIs identify organizations such as hospitals or group practices.

Related terms

Authoritative sources

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What’s on file, by the numbers

Platform snapshot · 2026-08-30

13.4Mproviders & companiesProviders, organizations, owners, and facilities on file
26.2Msource-linked factsSource-linked field facts in the dated platform snapshot
90sources with dataDistinct snapshot source IDs with at least one positive record count
16fresh sourcesDistinct source IDs whose latest positive-data snapshot falls within 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

Integrated, with-data, and fresh-observation counts are separate. No platform-wide source-completeness count is published. Completeness is source-specific and must be evaluated against the named source's expected scope. State coverage is a separate jurisdiction measure.

Source authority is record-specific

Use the issuer named on the record.

Fonteum spans federal, state, and global public publishers. A source page or returned record identifies its issuer and dataset where that metadata is available. A platform registry count does not assign every page to one authority or establish loaded, fresh, or complete coverage.

Browse source records and their stated limitations →

Reproducible by design

Inspect the evidence each published figure actually supplies.

Source and date

Research pages expose the named public file and observation date where those fields are available. Source-file SHA-256 coverage is separate; facts do not currently link deterministically to signatures.

Available derivation

Studies with a retained release and committed derivation link the SQL or method used. Other studies state the evidence and reproduction limits they actually have.

Daily observations

Dated table row-count observations can 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 →

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