NPPES file of Aug 9, 2026

Ian I. Armstrong, MD

Neurological Surgery Physician · Fort Sam Houston, TX

Ian I. Armstrong, MD is a neurological surgery physician with a practice address in Fort Sam Houston, Texas, and NPI 1851300859, issued on Aug 7, 2006. Check the license (Texas U0747, 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
1851300859
Name
Ian I. Armstrong
Credential
MD
Primary taxonomy
Neurological Surgery Physician 207T00000X
License numbers
U0747 TX
WA50707C CA
Self-reported in NPPES; status is on the state search
Practice location
3551 Roger Brooke Dr, Fort Sam Houston, TX 78234
Phone
(210) 539-9092
Enumerated
Aug 7, 2006
Record last updated
May 14, 2024
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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8 nearest neurological surgery physician records → All 669 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. Adrianna Adams, LCSWClinical Social Worker1275265456
  2. John AdamsGeneral Practice Physician1134754898
  3. Jordan Adams, PAPhysician Assistant1336876598
  4. Oluwole Afuape, OTR/LOccupational Therapist1033593561
  5. Pierre Monverdy Agnant, MD, MPH, MBA, MACCInternal Medicine Physician1669868568
  6. Della Agquiz, PHARMDOncology Pharmacist1700538741

Verify Ian I. Armstrong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license U0747    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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Industry payments in 2024: $68.94

1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ian Armstrong$69
  2. Specialty average$14,926

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

Ian I. Armstrong among 669 neurological surgery physician records in Texas

Ian I. Armstrong, MD is one of 669 neurological surgery physician records with a practice address in Texas. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.

  • NPI issued2006 · 12% of these records are older, 57% newer
  • In a Medicare fileYes · 80% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2024 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurological Surgery Physician providers in Texas

There are 669 neurological surgery physician records in Texas.

All 669 in Texas → Every provider in Fort Sam Houston → Neurological Surgery Physician nationwide →

The 8 neurological surgery physician records with the nearest ZIP codes

  1. Jason Boulter, MDFort Sam Houston, TX 782341336672914
  2. Jason Hall, M.D.Fort Sam Houston, TX 782341003223983
  3. Michael Larkin, MD, PHARMDFort Sam Houston, TX 782341710217120
  4. Ryan McDermott, MDFort Sam Houston, TX 782341114313301
  5. Ian McDougall, M.D.Fort Sam Houston, TX 782341356605927
  6. Ryan Morton, M.D.Fort Sam Houston, TX 782341922239268
  7. Geoffrey Peitz, MDFort Sam Houston, TX 782341548615404
  8. Victor SabourinFort Sam Houston, TX 782341770979320

Common questions

What is Ian I. Armstrong, MD's NPI number?

Ian I. Armstrong, MD's National Provider Identifier (NPI) is 1851300859, issued on Aug 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ian I. Armstrong, MD located?

The NPPES record lists a practice address at 3551 Roger Brooke Dr, Fort Sam Houston, TX, 78234. Phone: (210) 539-9092. Providers update this record themselves, so call before visiting.

How can I verify Ian I. Armstrong, MD's license?

NPPES lists Texas license number U0747, 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.