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

Billie Karen Martin, PA

Individual provider Cardiovascular Disease Physician · NPI 1457344780

Billie Karen Martin, PA is a Physician Assistant in San Marcos, Texas. Qualified in 1989, 37 years ago. Practices with Seton Family of Doctors, a 785-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
37
Licensed in
TX
In the registry since
2005
Specialties on file
2
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

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Practice location Address checks out

1330 Wonder World Dr Ste B108
San Marcos, TX 78666-7566 Not confirmed with CMS for 12 years — call before visiting
Phone: (512) 396-5603
Fax: (512) 396-5623
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Physician Assistant (primary) Taxonomy 363AM0700X · Licence PA00781 (TX)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence PA00781 (TX)

Record details

NPI number1457344780
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA
Sole proprietorNo
NPI enumeratedAugust 23, 2005
Last updated in NPPESMay 2, 2014

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Seton Family Of Doctors — 785 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients47
Services billed 309 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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 $25 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.

  • Dell Seton Med Center At The University Of Tx Hospital · Austin, TX

Colleagues at Seton Family of Doctors

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 785 clinicians in the practice; 12 are shown here.

Other providers in San Marcos