NPI age
19 years
Enumerated 2006-08-29
● Active
Type 1 · Individual
MS. Mary Louise Greiner, LCSW
Greiner is 1 of 358 social worker providers in Dallas and 1 of 3645 in Texas.
Primary specialty
Social Worker
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2009-05-12
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 3645 active social worker providers in Texas.
NPI age
19 years
↑ 14 yr above median (5 yr)
State licenses
1 state
2% of peers hold multiple states
Subspecialties
1
In the 10% of peers with subspecialties
NPI lifetime · 2006 → 2026
2006-08Enumerated in NPPES
2006
2026
Where they practice
Practice location
4525 Lemmon Ave, Ste. 200
Dallas, TX 752192145
Mailing address
4525 Lemmon Ave, Ste. 200
Dallas, TX 752192145
Specialties
-
Social Worker PrimaryA social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and...
-
Social WorkerA social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 110121000 | MAGELLAN |
| 01 (TX) | 2104531 | CIGNA |
| 01 (TX) | 222019 | VALUE OPTIONS |
| 01 (TX) | 81541W | BCBS |
Practice context
Part of a multi-provider practice. 23 other active providers share this practice address in NPPES.
Recently enumerated nearby: 5 new social worker providers have been added in Dallas in the last 180 days.
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Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.