Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hung D Mac, O.D.

Optometrist in San Jose, CA · enumerated 2006 · practices at Berryessa Optometry, A Professional Corp.

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

National Provider Identifier

1245208511

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Registry record

Entity type Individual (Type 1)

Name Dr. Hung D Mac

Credential O.D.

Sex Male

Practice address 2534 Berryessa Rd, San Jose, CA, 95132

Phone (408) 272-7200

Fax (408) 272-3310

Enumeration date Mar 10, 2006

Last updated in NPPES Jan 22, 2013

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 12610T (CA) 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 1245208511 active?

Yes, as of the latest NPPES snapshot, NPI 1245208511 is active (record last updated 2013-01-22).

How do I verify Hung Mac's NPI record?

Cross-check NPI 1245208511 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

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Berryessa Optometry, A Professional Corp Optometrist · San Jose, CA NPI 1588632863 Thomas Lim Optometrist · San Jose, CA NPI 1346218518

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-22.