Registry data as of Aug 27, 2026

Mark Crozier, M.D.

Radiation Oncology Physician · Austin, TX

Mark Crozier, M.D. is a radiation oncology physician with a practice address in Austin, Texas, and NPI 1376586271, issued on Jun 14, 2006. Check the license (Texas F9340, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1376586271
Name
Mark Crozier
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
F9340 TX
Self-reported in NPPES; status is on the state search
Practice location
313 E 12TH St, Austin, TX 78701
Phone
(512) 324-9650
Enumerated
Jun 14, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 313 E 12TH St

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

  1. Ammar Ahmed, MDAdolescent Medicine (Internal Medicine) Physician1245421429
  2. Candace Ashton, F.N.P.Family Nurse Practitioner1962691550
  3. Kimberly Butrum, RN GNPGerontology Nurse Practitioner1013102599
  4. Zachary Chipman, M.D.Obstetrics & Gynecology Physician1083776041
  5. Jadranko Corak, M.D.Internal Medicine Physician1801960364
  6. Marilyn Doyle, M.D.Pediatric Infectious Diseases Physician1215980032

Verify Mark Crozier in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license F9340    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.

88% fewer Medicare Part D claims than the average radiation oncology physician in 2024

16 Medicare Part D claims, against an average of 135 among the 4,225 providers of this specialty who prescribed in Part D.

  1. Mark Crozier16
  2. Specialty average135

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.

Radiation Oncology Physician providers in Texas

There are 392 radiation oncology physician records in Texas.

All 392 in Texas → Every provider in Austin →

Other radiation oncology physician records in Texas

  1. Ramzi Abdulrahman, MDLubbock, TX1790718203
  2. Stephen Acker, M.D.Georgetown, TX1881784221
  3. Mediha Ahmad, M.D.Victoria, TX1124447255
  4. Neelofur Ahmad, M.D.Houston, TX1154320976
  5. Awad Ahmed, MDHarlingen, TX1851702831
  6. Robin Akins, M.D.San Antonio, TX1174691133
  7. Karine Al FeghaliHouston, TX1861999161
  8. Kevin Albuquerque, MDDallas, TX1457338329
  9. Mohammed Aldehaim, MD, FRCPCHouston, TX1306322979
  10. Maureen AliruKingwood, TX1184252553

Common questions

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

Mark Crozier, M.D.'s National Provider Identifier (NPI) is 1376586271, issued on Jun 14, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Mark Crozier, M.D. located?

The NPPES record lists a practice address at 313 E 12TH St, Austin, TX, 78701. Phone: (512) 324-9650. Providers update this record themselves, so call before visiting.

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

NPPES lists Texas license number F9340, 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 Mark Crozier, M.D. prescribe under Medicare Part D?

In 2024, Mark Crozier, M.D. had 16 Medicare Part D claims; the average among radiation oncology physician prescribers was 135. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.