Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Benjamin John Diaz

Behavior Analyst in Portsmouth, NH · enumerated 2024.

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

National Provider Identifier

1578391553

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Registry record

Entity type Individual (Type 1)

Name Benjamin John Diaz

Sex Male

Practice address 200 Griffin Rd Ste 1, Portsmouth, NH, 03801

Phone (800) 778-5560

Enumeration date Jul 23, 2024

Last updated in NPPES Jul 23, 2024

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 1578391553 active?

Yes, as of the latest NPPES snapshot, NPI 1578391553 is active (record last updated 2024-07-23).

How do I verify Benjamin Diaz's NPI record?

Cross-check NPI 1578391553 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 2024-07-23.