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Gregory Allen Larson, FNP-BC

Family Nurse Practitioner in San Luis, AZ · enumerated 2006.

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

National Provider Identifier

1578536892

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Registry record

Entity type Individual (Type 1)
Name Gregory Allen Larson
Credential FNP-BC
Sex Male
Practice address 1233 N Main St, Ste 1a, San Luis, AZ, 85349
Phone (928) 550-5514
Fax (928) 722-6113
Enumeration date Feb 8, 2006
Last updated in NPPES Apr 1, 2019

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 2973 (MN) Secondary
363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP2705 (AZ) 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

How do I verify Gregory Larson's NPI record?
Cross-check NPI 1578536892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1578536892 active?
Yes, as of the latest NPPES snapshot, NPI 1578536892 is active (record last updated 2019-04-01).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-01.