Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gyeong Seok Oh, L.AC.

Acupuncturist in Yorba Linda, CA · enumerated 2007.

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

National Provider Identifier

1346430717

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Registry record

Entity type Individual (Type 1)

Name Gyeong Seok Oh

Credential L.AC.

Sex Female

Practice address 21550 Yorba Linda Blvd Ste C, Yorba Linda, CA, 92887

Phone (714) 693-7961

Fax (714) 693-7931

Enumeration date Jul 31, 2007

Last updated in NPPES Jul 31, 2007

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License AC7227 (CA) Primary

LAC · Licensed Acupuncturist: A practitioner licensed to perform acupuncture. About the LAC 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

Where does Gyeong Seok Oh practice?

The practice location on file with NPPES is in Yorba Linda, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gyeong Seok Oh?

The National Provider Identifier (NPI) for Gyeong Seok Oh is 1346430717, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-31.