Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Marc O Yoshizumi, OD

Ophthalmology Physician in Los Angeles, CA · enumerated 2006.

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

National Provider Identifier

1326062472

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Registry record

Entity type Individual (Type 1)

Name Marc O Yoshizumi

Credential OD

Sex Male

Practice address 100 Stein Plaza, Rm 1-340, Los Angeles, CA, 90095

Phone (310) 825-3090

Enumeration date Jul 26, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License G23032 (CA) 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
00G230320	Other	CA	MEDICAL PPIN #

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

How do I verify Marc Yoshizumi's NPI record?

Cross-check NPI 1326062472 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1326062472 active?

Yes, as of the latest NPPES snapshot, NPI 1326062472 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.