Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Celeste Gagnier, MD

Pediatrics Physician in Milford, MA · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1538456157

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Registry record

Entity type Individual (Type 1)

Name Celeste Gagnier

Credential MD

Sex Female

Practice address 14 Prospect St, Milford, MA, 01757

Phone (508) 473-1190

Enumeration date Jul 3, 2011

Last updated in NPPES Jan 19, 2022

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License R72766 (MA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1538456157 active?

Yes, as of the latest NPPES snapshot, NPI 1538456157 is active (record last updated 2022-01-19).

How do I verify Celeste Gagnier's NPI record?

Cross-check NPI 1538456157 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-19.