Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Olivia Larson, PHD

Psychologist in Appleton, WI · enumerated 2026.

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

National Provider Identifier

1801730239

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Registry record

Entity type Individual (Type 1)

Name Olivia Larson

Credential PHD

Sex Female

Practice address 4635 W College Ave, Appleton, WI, 54914

Phone (920) 750-7000

Enumeration date Apr 16, 2026

Last updated in NPPES Apr 16, 2026

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 Olivia Larson?

Olivia Larson 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 2026-04-16.