Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Andrew Holler

Addiction (Substance Use Disorder) Counselor in Fullerton, CA · enumerated 2017 · practices at Woodglen Recovery Junction Incorporated.

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

National Provider Identifier

1154835635

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Registry record

Entity type Individual (Type 1)

Name Andrew Holler

Sex Male

Practice address Fullerton, CA, 92832

Phone (714) 879-0929

Fax (714) 578-2960

Enumeration date Nov 20, 2017

Last updated in NPPES Jun 17, 2021

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 10774 (CA) 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 Andrew Holler?

Andrew Holler is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. 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 2021-06-17.