Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Catherine Liu

Psychiatry Physician in Arcadia, CA · enumerated 2022.

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

National Provider Identifier

1346981263

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Registry record

Entity type Individual (Type 1)

Name Catherine Liu

Sex Female

Practice address 330 E Live Oak Ave, Arcadia, CA, 91006

Phone (626) 254-1400

Enumeration date Apr 5, 2022

Last updated in NPPES Jun 10, 2026

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 20A21909 (CA) Primary

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.

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Frequently asked questions

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.

What specialty is Catherine Liu?

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

Other providers at this practice address

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Los Angeles County Department of Mental Health Mental Health Clinic/Center (Including Community Mental Health Center) · Arcadia, CA NPI 1578595674 Fatima Agregado Clinical Social Worker · Arcadia, CA NPI 1083700892 Yuk Mei Lam Clinical Social Worker · Arcadia, CA NPI 1609957828 Kalene Gilbert Clinical Social Worker · Arcadia, CA NPI 1255413753 Mirtala Parada Ward Clinical Social Worker · Arcadia, CA NPI 1578646790 Makan Emadi Clinical Social Worker · Arcadia, CA NPI 1396828455 Gerald O'Day Clinical Psychologist · Arcadia, CA NPI 1487737235 Julie Wu Hsieh Psychiatry Physician · Arcadia, CA NPI 1457434300

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-10.