Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Brian James Larson, CRNA

Certified Registered Nurse Anesthetist in Springfield, OR · enumerated 2006.

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

National Provider Identifier

1558384784

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Registry record

Entity type Individual (Type 1)

Name Brian James Larson

Credential CRNA

Sex Male

Practice address 3333 Riverbend Dr, Springfield, OR, 97477

Phone (541) 222-3154

Enumeration date Jul 26, 2006

Last updated in NPPES Jun 7, 2012

Taxonomy & licenses

367500000X Certified Registered Nurse Anesthetist Physician Assistants & Advanced Practice Nursing Providers · License 085079506CRNA (OR) Primary

CRNA · Certified Registered Nurse Anesthetist: An advanced practice nurse specializing in anesthesia care. About the CRNA credential

Other identifiers

Identifier	Type	State	Issuer
430020786	Other	OR	RAILROAD MEDICARE

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 Brian Larson's NPI record?

Cross-check NPI 1558384784 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558384784 active?

Yes, as of the latest NPPES snapshot, NPI 1558384784 is active (record last updated 2012-06-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-07.