Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marcus Anthony Alexander, LCSW

Clinical Social Worker in Baton Rouge, LA · enumerated 2014.

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

National Provider Identifier

1609285212

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Registry record

Entity type Individual (Type 1)

Name Dr. Marcus Anthony Alexander

Credential LCSW

Sex Male

Practice address 5850 Florida Blvd, Baton Rouge, LA, 70806

Phone (225) 201-0696

Fax (225) 201-1792

Enumeration date Aug 7, 2014

Last updated in NPPES Mar 12, 2021

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 12753 (LA) Primary

1041S0200X School Social Worker Behavioral Health & Social Service Providers · License 12753 (LA) Secondary

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 specialty is Marcus Alexander?

Marcus Alexander is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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 2021-03-12.