Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey R. Larson

Occupational Medicine Physician in Phoenix, AZ · enumerated 2007.

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

National Provider Identifier

1699824177

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey R. Larson

Sex Male

Practice address 9250 N 32nd Pl, Phoenix, AZ, 85028

Phone (602) 795-4620

Fax (602) 795-4620

Enumeration date Jan 10, 2007

Last updated in NPPES Jul 17, 2013

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 40406 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Jeffrey Larson practice?

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

What is the NPI number for Jeffrey Larson?

The National Provider Identifier (NPI) for Jeffrey Larson is 1699824177, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-07-17.