Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Patti A Landry, OD

Optometrist in Cambridge, MA · enumerated 2006.

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

National Provider Identifier

1689647232

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Registry record

Entity type Individual (Type 1)

Name Patti A Landry

Credential OD

Sex Female

Practice address 77 Mass Ave, Medical E23-395, Cambridge, MA, 02139

Phone (617) 253-4351

Enumeration date Feb 13, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 3069 (MA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
W15805	Other	MA	BLUE CROSS

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.

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Frequently asked questions

How do I verify Patti Landry's NPI record?

Cross-check NPI 1689647232 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689647232 active?

Yes, as of the latest NPPES snapshot, NPI 1689647232 is active (record last updated 2007-07-08).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.