Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Martin Douglas Brown, LCSW

Q: What is the NPI number for Martin Brown?

The National Provider Identifier (NPI) for Martin Brown is 1699882456, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Phoenix, AZ · enumerated 2006.

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

National Provider Identifier

1699882456

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Registry record

Entity type Individual (Type 1)

Name Martin Douglas Brown

Credential LCSW

Sex Male

Practice address 11221 N 28th Dr Bldg E, Phoenix, AZ, 85029

Phone (602) 609-4456

Enumeration date Aug 25, 2006

Last updated in NPPES Feb 12, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License LCSW-19626 (AZ) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 is the NPI number for Martin Brown?

The National Provider Identifier (NPI) for Martin Brown is 1699882456, a Type 1 (individual) record in the CMS NPPES registry.

Where does Martin Brown practice?

The practice location on file with NPPES is in Phoenix, AZ. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-12.