Shannon Anjelica Markus, M.D.
Emergency Medicine Physician · Austin, TX
Shannon Anjelica Markus, M.D. is an emergency medicine physician with a practice address in Austin, Texas, and NPI 1174057889, issued on Apr 19, 2017. Check the license (Texas T1456, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Shannon Anjelica Markus
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- T1456 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1500 Red River St, Austin, TX 78701
- Phone
- (512) 324-7010
- Enumerated
- Apr 19, 2017
- Record last updated
- Nov 5, 2023
- Medicare enrollment
- Enrolled (PECOS I20210720000525); accepts Medicare assignment
- Medical or professional school
- Perelman School Of Med At The University Of Pennsylvania, 2017
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 1500 Red River St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Abdulhamid Al-DouriInternal Medicine Physician1093205197
Verify Shannon Anjelica Markus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license T1456Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average emergency medicine physician in 2024
75 Medicare Part D claims for 65 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin13 claims
- Amoxicillin-Clavulanate Potass11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through 3 group practices
- Emergency Medicine Services OF TX, PLLCSan Antonio, TX
- Longhorn Emergency Medical Associates PAAustin, TX
- Travis County Emergency Physicians PAThe Woodlands, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Shannon Anjelica Markus among 4,885 emergency medicine physician records in Texas
Shannon Anjelica Markus, M.D. is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 74% of them.
- NPI issued2017 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2017 · median 2013 among the 2,779 with a school on file
- Record last updated2023 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Texas
There are 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Austin → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Milton Anderson, M.D.Austin, TX 787011912962713
- John Cottey, M.D.Austin, TX 787011194780130
- Patrick Crocker, D.O.Austin, TX 787011184689077
- Megan Hood, MDAustin, TX 787011588638050
- Keith Hurst, D.O.Austin, TX 787011275598393
- James Kempema, M.D.Austin, TX 787011235194077
- William Lindsey, M.D.Austin, TX 787011396700332
- Sharon Long, M.D.Austin, TX 787011720042930
Common questions
What is Shannon Anjelica Markus, M.D.'s NPI number?
Shannon Anjelica Markus, M.D.'s National Provider Identifier (NPI) is 1174057889, issued on Apr 19, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Shannon Anjelica Markus, M.D. located?
The NPPES record lists a practice address at 1500 Red River St, Austin, TX, 78701. Phone: (512) 324-7010. Providers update this record themselves, so call before visiting.
How can I verify Shannon Anjelica Markus, M.D.'s license?
NPPES lists Texas license number T1456, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Shannon Anjelica Markus, M.D. prescribe under Medicare Part D?
In 2024, Shannon Anjelica Markus, M.D. had 75 Medicare Part D claims for 65 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.