Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Andrew Walkowiak, OD

Optometrist in Greenfield, MA · enumerated 2005.

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

National Provider Identifier

1053301135

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Andrew Walkowiak

Credential OD

Sex Male

Practice address 33 Riddell St, Greenfield, MA, 01301

Phone (413) 774-7016

Fax (413) 773-7596

Enumeration date Oct 28, 2005

Last updated in NPPES Jun 2, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3551 (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

Where does Andrew Walkowiak practice?

The practice location on file with NPPES is in Greenfield, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Andrew Walkowiak?

The National Provider Identifier (NPI) for Andrew Walkowiak is 1053301135, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-02.