NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

James J Larsen, DO

Family Medicine Physician in Chelan, WA · enumerated 2006.

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

National Provider Identifier

1558399162

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name James J Larsen
Credential DO
Sex Male
Practice address 317 E Johnson Ave, Chelan, WA, 98816
Phone (509) 682-6000
Fax (509) 682-6296
Enumeration date Jun 30, 2006
Last updated in NPPES Dec 22, 2021

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License OP00001541 (WA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

What is the NPI number for James Larsen?
The National Provider Identifier (NPI) for James Larsen is 1558399162, a Type 1 (individual) record in the CMS NPPES registry.
Where does James Larsen practice?
The practice location on file with NPPES is in Chelan, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-22.