Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael A Roy, O D INC

Optometrist in Walnut Creek, CA · enumerated 2005.

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

National Provider Identifier

1770577892

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Registry record

Entity type Individual (Type 1)

Name Michael A Roy

Credential O D INC

Sex Male

Practice address 675 Ygnacio Valley Rd, Suite B103, Walnut Creek, CA, 94596

Phone (925) 933-4700

Fax (925) 933-4721

Enumeration date Sep 2, 2005

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5326T (CA) Primary

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 Michael Roy's NPI record?

Cross-check NPI 1770577892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1770577892 active?

Yes, as of the latest NPPES snapshot, NPI 1770577892 is active (record last updated 2023-03-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.