Mr. Brian Greene
Mr. Brian Greene is a Addiction (Substance Use Disorder) Counselor provider (Counselor) practicing in Fullerton, CA, registered in the NPPES registry with NPI 1669563573 since 2006.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1669563573 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mr. Brian Greene |
| Sex | Male |
| Practice address | Fullerton, CA, 92831 |
| Phone | 7148342676 |
| Enumeration date | 2006-09-27 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YA0400X | Addiction (Substance Use Disorder) Counselor | Primary | — | — |
Copy-ready billing details
Provider: Brian Greene NPI: 1669563573 Taxonomy: 101YA0400X (Addiction (Substance Use Disorder) Counselor) Address: Fullerton, CA, 92831
Verify this record
Cross-check NPI 1669563573 against the authoritative CMS record: view Mr. Brian Greene on the official NPPES registry .
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 or validate an NPI number.
Frequently asked questions
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What is the NPI number for Brian Greene?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.