NPI age
3 years
Enumerated 2022-11-07
● Active
Type 1 · Individual
William J Mast, FNP-C
Mast is 1 of 49 nurse practitioner providers in Greenville and 1 of 22123 in Texas.
Primary specialty
Nurse Practitioner
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-12-08
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
3 years
↓ 4 yr below median (7 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
0
23% of peers hold subspecialties
NPI lifetime · 2022 → 2026
2022-11Enumerated in NPPES
2022
2026
Where they practice
Practice location
3900 Joe Ramsey Blvd E Ste 6
Greenville, TX 754017705
Mailing address
1790 N Stonebridge Dr
McKinney, TX 750717437
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
Practice context
Part of a multi-provider practice. 1 other active provider shares this practice address in NPPES.
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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.