Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Michael Duong Od Inc

Q: What type of organization is Michael Duong Od Inc?

Michael Duong Od Inc is registered in NPPES as a Optometrist (its primary provider taxonomy).

Optometrist in San Ramon, CA · enumerated 2026 · authorized official Michael Duong, Owner.

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

National Provider Identifier

1326906421

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Registry record

Entity type Organization (Type 2)

Legal business name Michael Duong Od Inc

Practice address 2551 San Ramon Valley Blvd Ste 101, San Ramon, CA, 94583

Phone (925) 743-1222

Fax (925) 743-1221

Enumeration date Jan 15, 2026

Last updated in NPPES Mar 19, 2026

Taxonomy & classification

152W00000X Optometrist Eye and Vision Services Providers Primary

Authorized official

Name Michael Duong

Title Owner

Phone (925) 743-1222

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 type of organization is Michael Duong Od Inc?

Michael Duong Od Inc is registered in NPPES as a Optometrist (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Providers at this address

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Michael Duong, Od Optometrist · San Ramon, CA NPI 1316468176 Richard Lang Optometrist · San Ramon, CA NPI 1699347096

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-19.