Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Allen

Psychiatry Physician in Fontana, CA · enumerated 2022.

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

National Provider Identifier

1679216121

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Registry record

Entity type Individual (Type 1)

Name Matthew Allen

Sex Male

Practice address 17234 Valley Blvd., Bldg. A, Fontana, CA, 92335

Phone (402) 450-9429

Enumeration date Apr 13, 2022

Last updated in NPPES Oct 16, 2024

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 190732 (CA) 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.

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Frequently asked questions

Is NPI 1679216121 active?

Yes, as of the latest NPPES snapshot, NPI 1679216121 is active (record last updated 2024-10-16).

How do I verify Matthew Allen's NPI record?

Cross-check NPI 1679216121 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Victoria Tecson Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1780070268 Guillermo Saenz Zavala Family Medicine Physician · Fontana, CA NPI 1720475478 Denise Jen Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1790172419 Yen Phan Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1891173142 Alexander Bressler Family Medicine Physician · Fontana, CA NPI 1073991709 Karolyna Suarez Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1841670353 Malini Nadadur Student in an Organized Health Care Education/Training Program · Fontana, CA NPI 1639559099 Clarisse Valencia Family Medicine Physician · Fontana, CA NPI 1396126728

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-16.