Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Santina Elizabeth Mastoris, PA-C

Individual provider Surgical Physician Assistant · NPI 1992224547

Santina Elizabeth Mastoris, PA-C is a Physician Assistant in Austin, Texas. Qualified in 2017, 9 years ago. Practices with Doctors Express of the Beaumont Area PA, a 211-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
9
Licensed in
TX
In the registry since
2017
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

2905 San Gabriel St Ste 100
Austin, TX 78705-3548
Phone: (512) 815-0123
Fax: (512) 861-6206
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgical Physician Assistant (primary) Taxonomy 363AS0400X · Licence PA16767 (TX)

Record details

NPI number1992224547
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorYes
NPI enumeratedSeptember 14, 2017
Last updated in NPPESMay 21, 2026
Certification dateMay 21, 2026

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2017 (9 years in practice)
Group practice Doctors Express Of The Beaumont Area Pa — 211 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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 $629 23 payments · 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.

Colleagues at Doctors Express of the Beaumont Area PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 211 clinicians in the practice; 12 are shown here.

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