NPI age
16 years
Enumerated 2009-09-21
● Active
Type 1 · Individual
Martha L. Flagg, NP
Flagg is 1 of 237 nurse practitioner providers in San Antonio and 1 of 3226 in Texas.
Primary specialty
Nurse Practitioner
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2015-07-15
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 3226 active nurse practitioner providers in Texas.
NPI age
16 years
↑ 10 yr above median (6 yr)
State licenses
1 state
6% of peers hold multiple states
Subspecialties
0
30% of peers hold subspecialties
NPI lifetime · 2009 → 2026
2009-09Enumerated in NPPES
2009
2026
Where they practice
Practice location
4330 Medical Dr, Ste 500
San Antonio, TX 782293342
Mailing address
4330 Medical Dr, Ste 500
San Antonio, TX 782293342
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | TXB138824 | WELLMED MEDICARE |
| 05 (TX) | 208412102 |
Practice context
Part of a multi-provider practice. 46 other active providers share this practice address in NPPES.
Recently enumerated nearby: 6 new nurse practitioner providers have been added in San Antonio in the last 180 days.
See all →
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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.