Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Marilyn Costas Borromeo-Wesner, ARNP

Adult Health Nurse Practitioner in Snohomish, WA · enumerated 2006.

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

National Provider Identifier

1205908498

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Registry record

Entity type Individual (Type 1)

Name Ms. Marilyn Costas Borromeo-Wesner

Credential ARNP

Sex Female

Practice address 1830 Bickford Ave, Suite 211, Snohomish, WA, 98290

Phone (360) 668-1820

Fax (360) 668-1825

Enumeration date Nov 14, 2006

Last updated in NPPES Feb 6, 2015

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP30007479 (WA) Primary

Other identifiers

Identifier	Type	State	Issuer
P00653006	Other	-	MEDICARE RAILROAD
9650862	Medicaid	WA	-

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.

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Frequently asked questions

What is the NPI number for Marilyn Borromeo-Wesner?

The National Provider Identifier (NPI) for Marilyn Borromeo-Wesner is 1205908498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Marilyn Borromeo-Wesner practice?

The practice location on file with NPPES is in Snohomish, WA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-06.