Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diane S. Irwin, CRSS

Peer Specialist in Mobile, AL · enumerated 2025.

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

National Provider Identifier

1013885524

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Registry record

Entity type Individual (Type 1)

Name Diane S. Irwin

Credential CRSS

Sex X

Practice address 1200b Spring Hill Ave, Mobile, AL, 36604

Phone (251) 405-3677

Fax (251) 405-3233

Enumeration date Oct 27, 2025

Last updated in NPPES Oct 27, 2025

Taxonomy & licenses

175T00000X Peer Specialist Other 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

What specialty is Diane Irwin?

Diane Irwin is registered in NPPES with the primary taxonomy of Peer Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-27.