NPPES file of Aug 9, 2026

Mark Daniel Fierro, M.D.

Family Medicine Physician · Harker Heights, TX

Mark Daniel Fierro, M.D. is a family medicine physician with a practice address in Harker Heights, Texas, and NPI 1720425242, issued on May 23, 2013. Check the license 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
1720425242
Name
Mark Daniel Fierro
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
9408101 KS
MD-43099 IA
Self-reported in NPPES; status is on the state search
Practice location
800 W Central Texas Expy, Harker Heights, TX 76548
Phone
(254) 618-1050
Enumerated
May 23, 2013
Record last updated
Jul 25, 2016 (not updated in 10 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20161129000645); accepts Medicare assignment
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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Also registered at 800 W Central Texas Expy

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

  1. William Cashion, MDCardiovascular Disease Physician1497756860
  2. Kimberly Dietze, CNMAdvanced Practice Midwife1477927770
  3. John Duggan, MDOrthopaedic Surgery Physician1134396906
  4. Kenechukwu Eneli, M.D.Family Medicine Physician1235151192
  5. Patricia Lambden, NPAdult Health Clinical Nurse Specialist1457438558
  6. Miju LeeNurse Practitioner1083072680

Verify Mark Daniel Fierro in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical BoardCheck 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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97% fewer Medicare Part D claims than the average family medicine physician in 2024

122 Medicare Part D claims for 66 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. Mark Fierro122
  2. Specialty average3,544

Most prescribed

  1. Azithromycin16 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 2 group practices

  1. Apotheosis Medical Group, PLLCSan Antonio, TX
  2. Hospitalist Medicine Physicians OF Texas PLLCKilleen, TX

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

11 family medicine physician records list a practice address in Harker Heights

They are 11 of the 830 NPPES records with a practice address in Harker Heights, and 11,119 family medicine physician records in Texas.

All 11 in Harker Heights → All 11,119 in Texas → Every provider in Harker Heights →

Other family medicine physician records in Texas

  1. Srinivasa Aaluri, MDEl Paso, TX1265566509
  2. Maira Aamir, MDShenandoah, TX1932660859
  3. Fakhrudin Aaseemah Mohamed, M.DAllen, TX1952782518
  4. So Abad, MDWichita Falls, TX1184624694
  5. Yoseph AbadiRichardson, TX1700742640
  6. Marcus Abadie, M.D.Athens, TX1104821107
  7. Montserrat Abadie Sole, M.D.Fort Worth, TX1245437078
  8. Sarah Abang-Hayes, M.D.San Antonio, TX1326244724
  9. Ahmad Abazid, M.DRichardson, TX1013238401
  10. Syed Abbas, M.D.Houston, TX1821267477

Common questions

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

Mark Daniel Fierro, M.D.'s National Provider Identifier (NPI) is 1720425242, issued on May 23, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Mark Daniel Fierro, M.D. located?

The NPPES record lists a practice address at 800 W Central Texas Expy, Harker Heights, TX, 76548. Phone: (254) 618-1050. Providers update this record themselves, so call before visiting.

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

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 Daniel Fierro, M.D. prescribe under Medicare Part D?

In 2024, Mark Daniel Fierro, M.D. had 122 Medicare Part D claims for 66 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.