NPI Portal NPI Lookup & Verification

Russell Mun Yu Loo, PH.D.

Russell Mun Yu Loo is a Psychologist provider (Psychologist) practicing in Aiea, HI, registered in the NPPES registry with NPI 1659446821 since 2006. The credential PHD stands for Doctor of Philosophy.

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NPI 1659446821
Entity type Individual (Type 1)
Name Russell Mun Yu Loo
Credential PH.D.
Sex Male
Practice address Aiea, HI, 96701
Phone 8084871135
Enumeration date 2006-11-22
Last updated in NPPES 2007-07-08

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
103T00000X Psychologist Primary 146 HI

PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
005312-01 Medicaid HI
Copy-ready billing details
Provider: Russell Loo, PH.D.
NPI: 1659446821
Taxonomy: 103T00000X (Psychologist)
Address: Aiea, HI, 96701

Verify this record

Cross-check NPI 1659446821 against the authoritative CMS record: view Russell Mun Yu Loo on the official NPPES registry .

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 or validate an NPI number.

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 Russell Loo?
Russell Loo 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.