NPI age
19 years
Enumerated 2007-02-13
● Active
Type 1 · Individual
Mary Jessica Mertins, FNP
Mertins is 1 of 15 nurse practitioner providers in Hereford and 1 of 22123 in Texas.
Primary specialty
Nurse Practitioner
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-05-04
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 22123 active nurse practitioner providers in Texas.
NPI age
19 years
↑ 12 yr above median (7 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
0
23% of peers hold subspecialties
NPI lifetime · 2007 → 2026
2007-02Enumerated in NPPES
2007
2026
Where they practice
Practice location
540 W. 15th Street
Hereford, TX 79045
Mailing address
540 W. 15th Street
Hereford, TX 79045
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 617852 | RN LICENSE NUMBER |
| 01 (TX) | 06710 | PRESCRIPTION ID NUMBER |
Practice context
Part of a multi-provider practice. 3 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 22123 Nurse Practitioner providers in Texas?
Get the full list as a CSV with verified work emails, direct phones, and LinkedIn URLs.
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.