NPPES file of Aug 9, 2026

Mark Amsbaugh, M.D.

Radiation Oncology Physician · Houston, TX

Mark Amsbaugh, M.D. is a radiation oncology physician with a practice address in Houston, Texas, and NPI 1245598168, issued on Apr 28, 2012. Check the license (Texas R7162, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245598168
Name
Mark Amsbaugh
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
R7162 TX
Self-reported in NPPES; status is on the state search
Practice location
6400 Fannin St Ste 2800, Houston, TX 77030
Phone
(713) 486-8000
Enumerated
Apr 28, 2012
Record last updated
Jan 30, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(713) 486-8088
Medicare enrollment
Enrolled (PECOS I20180926001224); accepts Medicare assignment
Medical or professional school
University Of Texas Medical School At Houston, 2012
Telehealth
Offers telehealth (CMS)
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 radiation oncology physician records → All 449 in Texas → Look up another NPI →

Also registered at 6400 Fannin St Ste 2800

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

  1. Christina Abi Faraj, MDStudent in an Organized Health Care Education/Training Program1346182219
  2. Zaki Abou Mrad, MDStudent in an Organized Health Care Education/Training Program1033903323
  3. Nicholas Ahye, M.D.Neurological Surgery Physician1578978946
  4. Nida Ali, NPAcute Care Nurse Practitioner1538028477
  5. Jonathan Bentley, MDStudent in an Organized Health Care Education/Training Program1841130945
  6. Theresa Bosanek, PA-CPhysician Assistant1467699959

Verify Mark Amsbaugh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license R7162    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

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63% more Medicare Part D claims than the average radiation oncology physician in 2024

218 Medicare Part D claims for 83 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.

  1. Mark Amsbaugh218
  2. Specialty average134

Most prescribed

  1. Dexamethasone41 claims
  2. Levetiracetam39 claims
  3. Famotidine30 claims
  4. Lidocaine Hcl Viscous16 claims
  5. Memantine Hcl14 claims
  6. Ondansetron Hcl12 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.

Industry payments in 2024: $1,391.75

12 payments; by number, the most common kind was food and beverage; the largest payer was icotec Medical Inc. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Mark Amsbaugh$1,391.75
  2. Specialty average$1,897.85

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. UT PhysiciansHouston, TX

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

Mark Amsbaugh among 449 radiation oncology physician records in Texas

Mark Amsbaugh, M.D. is one of 449 radiation oncology physician records with a practice address in Texas. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.

  • NPI issued2012 · 69% of these records are older, 27% newer
  • In a Medicare fileYes · 85% of these records are
  • In the CMS Doctors and Clinicians fileYes · 78% of these records are
  • Graduated2012 · median 2004 among the 348 with a school on file
  • Record last updated2020 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Texas

There are 449 radiation oncology physician records in Texas.

All 449 in Texas → Every provider in Houston → Radiation Oncology Physician nationwide →

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Neelofur Ahmad, M.D.Houston, TX 770301154320976
  2. Edward Butler, M.D.Houston, TX 770301679565972
  3. Aileen Chen, MDHouston, TX 770301801876560
  4. Seungtaek Choi, M.D.Houston, TX 770301205860590
  5. Gregory Chronowski, M.D.Houston, TX 770301598789570
  6. Amol Ghia, M.D.Houston, TX 770301629030291
  7. Beverly Guadagnolo, M.D., MPHHouston, TX 770301407866676
  8. Joseph Herman, M.D.Houston, TX 770301346291465

Common questions

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

Mark Amsbaugh, M.D.'s National Provider Identifier (NPI) is 1245598168, issued on Apr 28, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Mark Amsbaugh, M.D. located?

The NPPES record lists a practice address at 6400 Fannin St Ste 2800, Houston, TX, 77030. Phone: (713) 486-8000. Providers update this record themselves, so call before visiting.

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

NPPES lists Texas license number R7162, 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 Amsbaugh, M.D. prescribe under Medicare Part D?

In 2024, Mark Amsbaugh, M.D. had 218 Medicare Part D claims for 83 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.

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.