Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Grace Harumi Nakamura, PA

Physician Assistant in Fountain Valley, CA · enumerated 2020 · practices at Tien Q Nguyen Inc.

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

National Provider Identifier

1639793110

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Registry record

Entity type Individual (Type 1)

Name Ms. Grace Harumi Nakamura

Credential PA

Sex Female

Practice address Fountain Valley, CA, 92708

Phone (714) 531-2966

Fax (714) 531-3495

Enumeration date Jun 1, 2020

Last updated in NPPES Jan 22, 2026

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 60016 (CA) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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

What specialty is Grace Nakamura?

Grace Nakamura is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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