NPI age
— years
Enumerated 2025-12-18
● Active
Type 1 · Individual
Mark Stelle, APRN
Stelle is 1 of 56 nurse practitioner providers in San Marcos and 1 of 22123 in Texas.
Primary specialty
Nurse Practitioner
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2026-01-23
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 22123 active nurse practitioner providers in Texas.
NPI age
0 years
↓ 7 yr below median (7 yr)
State licenses
1 state
5% of peers hold multiple states
Subspecialties
0
23% of peers hold subspecialties
NPI lifetime · 2025 → 2026
2025-12Enumerated in NPPES
2025
2026
Where they practice
Practice location
1301 Wonder World Dr
San Marcos, TX 786667533
Mailing address
6607 Brodie Ln Apt 816
Austin, TX 787454652
Additional practice locations
3 secondary locations on file with NPPES.
Location 2
600 N Union Ave
New Braunfels, TX 781304194
Location 3
5224 75th St Ste D
Lubbock, TX 794242525
Location 4
6607 Brodie Ln Apt 816
Austin, TX 787454652
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
Practice context
Part of a multi-provider practice. 62 other active providers share this practice address in NPPES.
Provyx · Custom healthcare lists
Need all 22123 Nurse Practitioner providers in Texas?
Provyx verifies the list to your scope. Business emails and direct lines are looked up at delivery, validated, and not stored.
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.