Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Diane Irven, CAC-AD

Addiction (Substance Use Disorder) Counselor in Easton, MD · enumerated 2008.

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

National Provider Identifier

1245490440

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Registry record

Entity type Individual (Type 1)

Name Ms. Diane Irven

Credential CAC-AD

Sex Female

Practice address 301 Bay St Ste 307, Easton, MD, 21601

Phone (410) 819-5916

Fax (410) 819-0591

Enumeration date Jun 11, 2008

Last updated in NPPES Jun 11, 2008

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License AC0369 (MD) 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

What specialty is Diane Irven?

Diane Irven is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. 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 2008-06-11.