Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Matthew Fiduk

Behavior Analyst in Costa Mesa, CA · enumerated 2018.

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

National Provider Identifier

1871097709

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Registry record

Entity type Individual (Type 1)

Name Matthew Fiduk

Sex Male

Practice address 1111 Baker St Ste A, Costa Mesa, CA, 92626

Phone (818) 241-6780

Enumeration date Mar 23, 2018

Last updated in NPPES Sep 20, 2019

Taxonomy & licenses

103K00000X Behavior Analyst Behavioral Health & Social Service Providers 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

Is NPI 1871097709 active?

Yes, as of the latest NPPES snapshot, NPI 1871097709 is active (record last updated 2019-09-20).

How do I verify Matthew Fiduk's NPI record?

Cross-check NPI 1871097709 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-20.