Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Marissa Y Gulbis, PA-C

Individual provider Physician Assistant · NPI 1881129658

Marissa Y Gulbis, PA-C is a Physician Assistant in San Antonio, Texas. Graduated from University of Texas Medical School at San Antonio in 2016, 10 years ago. Practices with University of Texas Health Science Center at San Antonio, a 1,295-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
10
Trained at
University of Texas Medical School at San Antonio
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

4502 Medical Dr Fl 2
San Antonio, TX 78229-4402
Phone: (210) 358-8555
Fax: (210) 358-8576
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 8900 Shoal Creek Blvd, Austin, TX 78757-6810 — (512) 323-6900

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA11262 (TX)

Record details

NPI number1881129658
Entity typeIndividual (Type 1)
GenderFemale
Credentials PA-C
Sole proprietorNo
NPI enumeratedApril 28, 2017
Last updated in NPPESMay 9, 2018

Medicare enrollment

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

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolUNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO
Graduated 2016 (10 years in practice)
Group practice University Of Texas Health Science Center At San Antonio — 1295 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 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 patients80
Services billed 104 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Practises at

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

  • University Health System Hospital · San Antonio, TX
  • Baptist Medical Center Hospital · San Antonio, TX
  • Ut Health San Antonio Multispecialty & Research Ho Hospital · San Antonio, TX

Colleagues at University of Texas Health Science Center at San Antonio

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1295 clinicians in the practice; 12 are shown here.

Other providers in San Antonio