Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Malgorzata Monika Siwek

Home Health Registered Nurse in Everett, WA · enumerated 2024 · practices at Cp Snohomish County Wa, LLC.

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

National Provider Identifier

1235993049

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Registry record

Entity type Individual (Type 1)

Name Malgorzata Monika Siwek

Sex Female

Practice address 1615 75th St Sw, Everett, WA, 98203

Phone (425) 327-1395

Enumeration date Feb 12, 2024

Last updated in NPPES Feb 12, 2024

Taxonomy & licenses

163WH0200X Home Health Registered Nurse Nursing Service Providers · License 00148625 (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

Is NPI 1235993049 active?

Yes — as of the latest NPPES snapshot, NPI 1235993049 is active (record last updated 2024-02-12).

How do I verify Malgorzata Siwek's NPI record?

Cross-check NPI 1235993049 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 2024-02-12.