Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Margaret Susan Martin, OWNER

Home Health Agency in Redmond, WA · enumerated 2023.

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

National Provider Identifier

1336832088

Verified

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Registry record

Entity type Individual (Type 1)

Name Margaret Susan Martin

Credential OWNER

Sex Female

Practice address Redmond, WA, 98052

Phone (206) 914-7500

Enumeration date May 30, 2023

Last updated in NPPES May 30, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

251E00000X Home Health Agency Agencies · License 604618772 (WA) 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

How do I verify Margaret Martin's NPI record?

Cross-check NPI 1336832088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1336832088 active?

Yes, as of the latest NPPES snapshot, NPI 1336832088 is active (record last updated 2023-05-30).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-30.