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

Alison Elizabeth Collier, FNP

Family Nurse Practitioner in Simi Valley, CA · enumerated 2015.

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

National Provider Identifier

1639553753

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Registry record

Entity type Individual (Type 1)

Name Alison Elizabeth Collier

Credential FNP

Sex Female

Practice address Simi Valley, CA, 93065

Phone (303) 523-7069

Enumeration date Jul 17, 2015

Last updated in NPPES Jul 5, 2017

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

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 677429-1 (NY) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F340317-1 (NY) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Alison Collier practice?

The practice location on file with NPPES is in Simi Valley, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alison Collier?

The National Provider Identifier (NPI) for Alison Collier is 1639553753, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-05.