Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arminda Royster

Peer Specialist in Anaheim, CA · enumerated 2018.

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

National Provider Identifier

1023517059

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Registry record

Entity type Individual (Type 1)

Name Arminda Royster

Sex Female

Practice address 501 N Brookhurst St Ste 306, Anaheim, CA, 92801

Phone (714) 948-7970

Enumeration date Feb 5, 2018

Last updated in NPPES Feb 5, 2018

Taxonomy & licenses

175T00000X Peer Specialist Other Service Providers 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 Arminda Royster?

Arminda Royster is registered in NPPES with the primary taxonomy of Peer Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-05.