Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Downey, PA-C

Physician Assistant in Brewster, WA · enumerated 2014.

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

National Provider Identifier

1821492547

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Registry record

Entity type Individual (Type 1)

Name Mary Downey

Credential PA-C

Sex Female

Practice address 525 Jay Ave, Brewster, WA, 98812

Phone (509) 689-3455

Fax (509) 689-2104

Enumeration date Oct 9, 2014

Last updated in NPPES Oct 9, 2014

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA60507454 (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 1821492547 active?

Yes, as of the latest NPPES snapshot, NPI 1821492547 is active (record last updated 2014-10-09).

How do I verify Mary Downey's NPI record?

Cross-check NPI 1821492547 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 2014-10-09.