NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Yolanda C Johnson-Martin, LCSW

Clinical Social Worker in Crossett, AR · enumerated 2008.

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

National Provider Identifier

1154570521

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Registry record

Entity type Individual (Type 1)
Name Ms. Yolanda C Johnson-Martin
Credential LCSW
Sex Female
Practice address 304 Main St, Crossett, AR, 71635
Enumeration date Sep 10, 2008
Last updated in NPPES Jan 3, 2020

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6815-C (AR) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier Type State Issuer
227892719 Medicaid AR -
5CW73 Other AR BCBS

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.

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Frequently asked questions

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.
What specialty is Yolanda Johnson-Martin?
Yolanda Johnson-Martin 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-03.