Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hannah Donovan, OD

Optometrist in Chelmsford, MA · enumerated 2023.

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

National Provider Identifier

1750066320

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Registry record

Entity type Individual (Type 1)

Name Hannah Donovan

Credential OD

Sex Female

Practice address 19 Village Sq, Chelmsford, MA, 01824

Phone (978) 256-5600

Fax (978) 703-0250

Enumeration date Jun 20, 2023

Last updated in NPPES Feb 20, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5647 (MA) Primary

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 Hannah Donovan?

Hannah Donovan 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 2025-02-20.