NPPES file of Aug 9, 2026

Mark Thomas Muir, M.D.

Surgical Critical Care Physician · San Antonio, TX

Mark Thomas Muir, M.D. is a surgical critical care physician with a practice address in San Antonio, Texas, and NPI 1134332422, issued on May 7, 2007. Check the license (Texas N2675, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1134332422
Name
Mark Thomas Muir
Credential
M.D.
Primary taxonomy
Surgical Critical Care Physician 2086S0102X
License number
N2675 TX
Self-reported in NPPES; status is on the state search
Practice location
4502 Medical Dr, San Antonio, TX 78229
Phone
(210) 358-4000
Enumerated
May 7, 2007
Record last updated
Nov 17, 2023
Medicare enrollment
Enrolled (PECOS I20130808000840); accepts Medicare assignment
Medical or professional school
University Of Texas Southwestern Medical School At Dallas, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest surgical critical care physician records → All 117 in Texas → Look up another NPI →

Also registered at 4502 Medical Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Aaron Abarbanell, MDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician1245497809
  2. Ayham AbdelAnesthesiology Physician1467147496
  3. Ali Abedi, M.D.Pulmonary Disease Physician1346566312
  4. Jordan Abel, M.D.Infectious Disease Physician1417273301
  5. Aesha Aboueisha, MDHospitalist Physician1225527815
  6. Seena Abraham, MDFamily Medicine Physician1306338561

Verify Mark Thomas Muir in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license N2675    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. University OF Texas Health Science Center AT San AntonioSan Antonio, TX

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Mark Thomas Muir among 117 surgical critical care physician records in Texas

Mark Thomas Muir, M.D. is one of 117 surgical critical care physician records with a practice address in Texas. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 32% of them.

  • NPI issued2007 · 32% of these records are older, 57% newer
  • In a Medicare fileYes · 89% of these records are
  • In the CMS Doctors and Clinicians fileYes · 84% of these records are
  • Graduated2006 · median 2010 among the 98 with a school on file
  • Record last updated2023 · 26% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2086S0102X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgical Critical Care Physician providers in Texas

There are 117 surgical critical care physician records in Texas.

All 117 in Texas → Every provider in San Antonio → Surgical Critical Care Physician nationwide →

The 8 surgical critical care physician records with the nearest ZIP codes

  1. Nicole Bragg, MDSan Antonio, TX 782291104322668
  2. Christopher Brown, M.D.San Antonio, TX 782291295266716
  3. Christopher Crane, MDSan Antonio, TX 782291043538168
  4. Mark FosterSan Antonio, TX 782291053653394
  5. Donald Jenkins, MDSan Antonio, TX 782291013988484
  6. Ashley McGinity, M.D.San Antonio, TX 782291114212412
  7. John Myers, MDSan Antonio, TX 782291932110731
  8. Elizabeth Scherer, M.D.San Antonio, TX 782291912218900

Common questions

What is Mark Thomas Muir, M.D.'s NPI number?

Mark Thomas Muir, M.D.'s National Provider Identifier (NPI) is 1134332422, issued on May 7, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mark Thomas Muir, M.D. located?

The NPPES record lists a practice address at 4502 Medical Dr, San Antonio, TX, 78229. Phone: (210) 358-4000. Providers update this record themselves, so call before visiting.

How can I verify Mark Thomas Muir, M.D.'s license?

NPPES lists Texas license number N2675, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.