Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alison Catherine Dirienzo

Addiction (Substance Use Disorder) Counselor in Mission Viejo, CA · enumerated 2019 · practices at Jrv Recovery,Inc..

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

National Provider Identifier

1497300560

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Alison Catherine Dirienzo

Sex Female

Practice address 27281 Las Ramblas Ste 140, Mission Viejo, CA, 92691

Phone (949) 540-0170

Fax (949) 540-0173

Enumeration date Aug 6, 2019

Last updated in NPPES Aug 12, 2020

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor 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

What specialty is Alison Dirienzo?

Alison Dirienzo 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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-12.