Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tammy Mccoy-Arballo, PSY.D.

Psychologist in Murrieta, CA · enumerated 2012.

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

National Provider Identifier

1891043881

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Registry record

Entity type Individual (Type 1)

Name Dr. Tammy Mccoy-Arballo

Credential PSY.D.

Sex Female

Practice address 39755 Murrieta Hot Springs Rd Ste D160, Murrieta, CA, 92563

Phone (760) 885-6952

Enumeration date Aug 22, 2012

Last updated in NPPES Feb 1, 2021

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PSY28762 (CA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD 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.

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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 Tammy Mccoy-Arballo?

Tammy Mccoy-Arballo is registered in NPPES with the primary taxonomy of Psychologist. 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 2021-02-01.