Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Anna Marie Casillas, ARNP

Family Medicine Physician in Mount Vernon, WA · enumerated 2019 · practices at Compass Pain Clinic Washington PC.

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

National Provider Identifier

1912469198

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Registry record

Entity type Individual (Type 1)

Name Anna Marie Casillas

Credential ARNP

Sex Female

Practice address 2021 E College Way Ste 210, Mount Vernon, WA, 98273

Phone (360) 755-3670

Fax (360) 873-8697

Enumeration date Apr 4, 2019

Last updated in NPPES Nov 8, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License AP60942913 (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

What is the NPI number for Anna Casillas?

The National Provider Identifier (NPI) for Anna Casillas is 1912469198, a Type 1 (individual) record in the CMS NPPES registry.

Where does Anna Casillas practice?

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

Other providers at this practice address

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Compass Pain Clinic Washington PC Physical Medicine & Rehabilitation Physician · Mount Vernon, WA NPI 1235081837

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-08.