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

Dr. Shannon Anjelica Markus, MD

Individual provider Emergency Medicine Physician · NPI 1174057889

Dr. Shannon Anjelica Markus, MD practises Emergency Medicine in Austin, Texas. Graduated from Perelman School of Med at the University of Pennsylvania in 2017, 9 years ago. Practices with Emergency Medicine Services of Tx, PLLC, a 358-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
9
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
TX
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1500 Red River St
Austin, TX 78701-1918
Phone: (512) 324-7010
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence T1456 (TX)

Record details

NPI number1174057889
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 19, 2017
Last updated in NPPESNovember 5, 2023
Certification dateNovember 5, 2023

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 2017 (9 years in practice)
Group practice Emergency Medicine Services Of Tx, Pllc — 358 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 patients142
Services billed 204 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

  • Ascension Seton Southwest Hospital · Austin, TX · listed as Ascension Seton
  • Ascension Seton Northwest Hospital · Austin, TX · listed as Ascension Seton
  • Dell Seton Med Center At The University Of Tx Hospital · Austin, TX
  • North Austin Medical Center Hospital · Austin, TX

Colleagues at Emergency Medicine Services of Tx, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 358 clinicians in the practice; 12 are shown here.

Other providers in Austin