NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cattien Ngoc Phan, DO

Neurology Physician in Irvine, CA · enumerated 2021 · practices at Kaiser Permanente.

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

National Provider Identifier

1992383525

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Cattien Ngoc Phan
Credential DO
Sex Female
Practice address 6670 Alton Pkwy, Irvine, CA, 92618
Phone (833) 574-2273
Enumeration date Apr 2, 2021
Last updated in NPPES Aug 5, 2026

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 20A20780 (CA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Cattien Phan practice?
The practice location on file with NPPES is in Irvine, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Cattien Phan?
The National Provider Identifier (NPI) for Cattien Phan is 1992383525, 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 2026-08-05.