NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Margaret Anne Komoniewski, OD

Optometrist in Cambridge, MA · enumerated 2025 · practices at Harvard Square Eye Care P.C..

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

National Provider Identifier

1669365607

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Margaret Anne Komoniewski
Credential OD
Sex Female
Practice address 19 Dunster St, Cambridge, MA, 02138
Phone (617) 354-5590
Enumeration date May 29, 2025
Last updated in NPPES Dec 3, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 0618003501 (VA) 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

Is NPI 1669365607 active?
Yes, as of the latest NPPES snapshot, NPI 1669365607 is active (record last updated 2025-12-03).
How do I verify Margaret Komoniewski's NPI record?
Cross-check NPI 1669365607 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-03.