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Arta Western California, Inc.

Health Maintenance Organization in Irvine, CA · enumerated 2007 · authorized official John Liethen, Secretary.

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

National Provider Identifier

1770799629

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Registry record

Entity type Organization (Type 2)
Legal business name Arta Western California, Inc.
Practice address 3333 Michelson Dr, Suite 735, Irvine, CA, 92612
Phone (949) 260-6500
Fax (949) 833-3736
Enumeration date May 15, 2007
Last updated in NPPES Aug 19, 2019

Taxonomy & classification

302R00000X Health Maintenance Organization Managed Care Organizations Primary

Authorized official

Name John Liethen
Title Secretary
Phone (952) 205-6262

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2019-08-19. Verify at npiregistry.cms.hhs.gov.
Where is Arta Western California, Inc. located?
The practice location on file with NPPES is in Irvine, CA.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-19.