NPPES file of Aug 9, 2026

Halward Blegen, DO

Ophthalmology Physician · Jbsa Fort Sam Houston, TX

Halward Blegen, DO is an ophthalmology physician with a practice address in Jbsa Fort Sam Houston, Texas, and NPI 1003318569, issued on Mar 1, 2018. Check the license (Texas T7498, 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
1003318569
Name
Halward Blegen
Credential
DO
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
T7498 TX
02005951A IN
Self-reported in NPPES; status is on the state search
Practice location
3551 Roger Brooke Dr, Jbsa Fort Sam Houston, TX 78234
Phone
(210) 220-7419
Enumerated
Mar 1, 2018
Record last updated
Dec 31, 2024
Medicare enrollment
Enrolled (PECOS I20250618002582); accepts Medicare assignment
Medical or professional school
University Of New England, College Of Osteo Medicine, 2018
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 ophthalmology physician records → All 1,514 in Texas → Look up another NPI →

Also registered at 3551 Roger Brooke Dr

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

  1. Brian Barthol, PHARM.D.Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1083689517
  2. Thomas Caldwell, MDEmergency Medicine Physician1124768718
  3. Robyn Chalupa, PA-CPhysician Assistant1932426145
  4. Anna Davalos, MDGeneral Practice Physician1437858560
  5. Francisco Dominguez, M.D.Cardiovascular Disease Physician1255431540
  6. Brody HarnMilitary Health Care Provider1922949593

Verify Halward Blegen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license T7498    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. Eye Associates OF New Mexico LtdAlbuquerque, NM

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

Halward Blegen among 1,514 ophthalmology physician records in Texas

Halward Blegen, DO is one of 1,514 ophthalmology physician records with a practice address in Texas. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.

  • NPI issued2018 · 86% of these records are older, 11% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2018 · median 2003 among the 1,052 with a school on file
  • Record last updated2024 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Ophthalmology Physician providers in Texas

There are 1,514 ophthalmology physician records in Texas.

All 1,514 in Texas → Every provider in Jbsa Fort Sam Houston → Ophthalmology Physician nationwide →

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Trevor AnnisJbsa Ft Sam Houston, TX 782341447886940
  2. Katherine Baker, DOFort Sam Houston, TX 782341588041503
  3. Darrel Carlton, MDFort Sam Houston, TX 782341427128677
  4. Benjamin Chacko, M.D.Fort Sam Houston, TX 782341033109269
  5. Nathan Davidson, MDJbsa Ft Sam Houston, TX 782341093236127
  6. Sheri Demartelaere, M.D.Fort Sam Houston, TX 782341083605430
  7. Donald Gagliano, M.D.Fort Sam Houston, TX 782341124080494
  8. Nikhil Godbole, DOFort Sam Houston, TX 782341205259116

Common questions

What is Halward Blegen, DO's NPI number?

Halward Blegen, DO's National Provider Identifier (NPI) is 1003318569, issued on Mar 1, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Halward Blegen, DO located?

The NPPES record lists a practice address at 3551 Roger Brooke Dr, Jbsa Fort Sam Houston, TX, 78234. Phone: (210) 220-7419. Providers update this record themselves, so call before visiting.

How can I verify Halward Blegen, DO's license?

NPPES lists Texas license number T7498, 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.