Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cassandra Mary Gruber, PA-C

Physician Assistant in Madras, OR · enumerated 2022.

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

National Provider Identifier

1821718693

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Registry record

Entity type Individual (Type 1)

Name Cassandra Mary Gruber

Credential PA-C

Sex Female

Practice address 76 Ne 12th St, Madras, OR, 97741

Phone (541) 475-3874

Enumeration date Aug 31, 2022

Last updated in NPPES Oct 25, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA222387 (OR) 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

Where does Cassandra Gruber practice?

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

What is the NPI number for Cassandra Gruber?

The National Provider Identifier (NPI) for Cassandra Gruber is 1821718693, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-25.