NPI age
20 years
Enumerated 2005-09-20
● Active
Type 1 · Individual
Mark S Greenberg, MD
Greenberg is 1 of 44 specialist providers in Irving and 1 of 4038 in Texas.
Primary specialty
Specialist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-16
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 4038 active specialist providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
7% of peers hold subspecialties
NPI lifetime · 2005 → 2026
2005-09Enumerated in NPPES
2005
2026
Where they practice
Practice location
400 W Lbj Fwy Ste 330
Irving, TX 750633717
Mailing address
400 W Lbj Fwy Ste 330
Irving, TX 750633717
Specialties
-
Specialist PrimaryAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | MDH0399 | WK COMP |
| 01 (TX) | 89290B | BCBS OF TX |
Practice context
Part of a multi-provider practice. 3 other active providers share this practice address in NPPES.
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- 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.
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