Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Allen S Mathew MD

Q: What is the NPI number for Allen S Mathew MD?

The NPI for Allen S Mathew MD is 1780944579, a Type 2 (organization) record in the CMS NPPES registry.

Nephrology Physician in Eureka, CA · enumerated 2012 · authorized official Sarah Mathew, Manager.

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

National Provider Identifier

1780944579

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Registry record

Entity type Organization (Type 2)

Legal business name Allen S Mathew MD

Other name <Unavail>

Practice address 2316 Harrison Ave, Eureka, CA, 95501

Phone (707) 444-2534

Fax (707) 441-0344

Enumeration date May 25, 2012

Last updated in NPPES Sep 17, 2024

Taxonomy & classification

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License G84898 (CA) Primary

Authorized official

Name Sarah Mathew

Title Manager

Phone (707) 572-7609

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

Who is the authorized official for Allen S Mathew MD?

NPPES lists Sarah Mathew (Manager) as the authorized official for this organization.

What is the NPI number for Allen S Mathew MD?

The NPI for Allen S Mathew MD is 1780944579, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-17.