Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark Stelle, APRN

Individual provider Family Nurse Practitioner · NPI 1699630996

Mark Stelle, APRN is a Nurse Practitioner in San Marcos, Texas. Qualified in 2024, 2 years ago. Practices with Physicians Unity, a 60-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
2
Licensed in
TX
In the registry since
2025
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

See every abbreviation used in this directory →

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Practice location Address checks out

1301 Wonder World Dr
San Marcos, TX 78666-7533
Phone: (512) 353-8979
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 6607 Brodie Ln Apt 816, Austin, TX 78745-4652 — (512) 717-1617
  • 5224 75th St Ste D, Lubbock, TX 79424-2525 — (806) 712-1096
  • 600 N Union Ave, New Braunfels, TX 78130-4194 — (830) 606-9111

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 1220613 (TX)

Record details

NPI number1699630996
Entity typeIndividual (Type 1)
GenderMale
Credentials APRN
Sole proprietorYes
NPI enumeratedDecember 18, 2025
Last updated in NPPESJanuary 23, 2026
Certification dateJanuary 23, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2024 (2 years in practice)
Group practice Physicians Unity — 60 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $22 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Guadalupe Regional Medical Center Hospital · Seguin, TX · listed as Guadalupe Regional Medical Group
  • Christus Santa Rosa Hospital-San Marcos Hospital · San Marcos, TX

Colleagues at Physicians Unity

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 60 clinicians in the practice; 12 are shown here.

Other providers in San Marcos