Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Loren M Larson, M.D.

Orthopaedic Surgery Physician in Port Angeles, WA · enumerated 2006 · practices at Olympic Medical Physicians.

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

National Provider Identifier

1861550766

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Registry record

Entity type Individual (Type 1)

Name Loren M Larson

Credential M.D.

Sex Male

Practice address 907 Georgiana St, Port Angeles, WA, 98362

Phone (360) 565-0999

Fax (360) 457-1599

Enumeration date Dec 4, 2006

Last updated in NPPES Oct 3, 2017

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License MD00048249 (WA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify Loren Larson's NPI record?

Cross-check NPI 1861550766 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861550766 active?

Yes, as of the latest NPPES snapshot, NPI 1861550766 is active (record last updated 2017-10-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-03.