NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Dennis Michael Giroux, BA

Addiction (Substance Use Disorder) Counselor in Oxnard, CA · enumerated 2007 · practices at Alternative Action Program.

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

National Provider Identifier

1518087741

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. Dennis Michael Giroux
Credential BA
Sex Male
Practice address 2575 Wagon Wheel Rd, Oxnard, CA, 93036
Fax (805) 988-4883
Enumeration date Mar 30, 2007
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 05103 (CA) Primary

Other identifiers

Identifier Type State Issuer
05103 Other CA CERTIFICATE

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

Where does Dennis Giroux practice?
The practice location on file with NPPES is in Oxnard, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dennis Giroux?
The National Provider Identifier (NPI) for Dennis Giroux is 1518087741, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.