Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Greta Katherine Larson, ARNP

Family Nurse Practitioner in Gresham, OR · enumerated 2009.

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

National Provider Identifier

1619204583

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Registry record

Entity type Individual (Type 1)

Name Greta Katherine Larson

Credential ARNP

Sex Female

Practice address 440 Nw Division St, Gresham, OR, 97030

Phone (503) 215-9500

Enumeration date Nov 12, 2009

Last updated in NPPES Mar 19, 2021

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 201391240NP-PP (OR) Primary

Other identifiers

Identifier	Type	State	Issuer
500660728	Medicaid	OR	-

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

Is NPI 1619204583 active?

Yes, as of the latest NPPES snapshot, NPI 1619204583 is active (record last updated 2021-03-19).

How do I verify Greta Larson's NPI record?

Cross-check NPI 1619204583 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-19.