Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Justine Grier, OD

Optometrist in Worcester, MA · enumerated 2017.

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

National Provider Identifier

1346766326

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Registry record

Entity type Individual (Type 1)

Name Justine Grier

Credential OD

Sex Female

Practice address 281 Lincoln St, Worcester, MA, 01605

Phone (508) 334-6855

Fax (508) 334-6795

Enumeration date Aug 21, 2017

Last updated in NPPES Aug 6, 2018

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5238 (MA) Primary

152WP0200X Pediatric Optometrist Eye and Vision Services Providers · License 5238 (MA) Secondary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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

What specialty is Justine Grier?

Justine Grier is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-06.