Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Mary Louise Greiner, LCSW

Social Worker in Dallas, TX · enumerated 2006 · practices at Jd Business Solutions, LLC.

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

National Provider Identifier

1891804605

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Registry record

Entity type Individual (Type 1)

Name Ms. Mary Louise Greiner

Credential LCSW

Sex Female

Practice address 4525 Lemmon Ave, Ste. 200, Dallas, TX, 75219

Phone (214) 526-4525

Fax (214) 520-6468

Enumeration date Aug 29, 2006

Last updated in NPPES May 12, 2009

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 24392 (TX) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 24392 (TX) Secondary

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
110121000	Other	TX	MAGELLAN
2104531	Other	TX	CIGNA
222019	Other	TX	VALUE OPTIONS
81541W	Other	TX	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 Mary Greiner?

Mary Greiner is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-05-12.