Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Joohyoung Seo, O.T.

Occupational Therapist in Garden Grove, CA · enumerated 2012.

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

National Provider Identifier

1649539651

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Joohyoung Seo

Credential O.T.

Sex Male

Practice address 9764 Garden Grove Blvd, Garden Grove, CA, 92844

Phone (714) 590-0100

Fax (714) 590-0089

Enumeration date May 10, 2012

Last updated in NPPES May 10, 2012

Taxonomy & licenses

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License OT12242 (CA) Primary

OT · Occupational Therapist: A licensed therapist helping patients develop or recover skills for daily living and working. About the OT credential

Other identifiers

Identifier	Type	State	Issuer
OT12242	Other	CA	CA LICENSE NUMBER

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 Joohyoung Seo practice?

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

What is the NPI number for Joohyoung Seo?

The National Provider Identifier (NPI) for Joohyoung Seo is 1649539651, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-05-10.