NPPES file of Aug 9, 2026

Madeline Diep Nguyen, O.D.

Optometrist · Houston, TX

Madeline Diep Nguyen, O.D. is an optometrist with a practice address in Houston, Texas, and NPI 1366456469, issued on Jul 27, 2006. Check the license (Texas 6950T, as entered in NPPES) with the Texas board that licenses this profession; 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
1366456469
Name
Madeline Diep Nguyen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
6950T TX
Self-reported in NPPES; status is on the state search
Practice location
505 J Davis Armistead Bldg, Houston, TX 77204
Phone
(713) 743-2020
Enumerated
Jul 27, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20070425000339); may accept Medicare assignment
Medical or professional school
University Of Houston - College Of Optometry, 2006
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 505 J Davis Armistead Bldg

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

  1. Robert Bailey, O.D.Optometrist1932102621
  2. Corina Busuioc, O.D.Optometrist1316029606
  3. Debra Currie, O.D.Optometrist1255336442
  4. Joe Deloach, O.D.Optometrist1700840964
  5. Ruhee Dhalla, O.D.Optometrist1851604326
  6. Kia Eldred, O.D.Optometrist1427056787

Verify Madeline Diep Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Texas board licenses this profession
    Search for license 6950T    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
Find the Texas license search

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86% fewer Medicare Part D claims than the average optometrist in 2024

40 Medicare Part D claims for 19 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 35% of claims.

  1. Madeline Nguyen40
  2. Specialty average277

Most prescribed

  1. Doxycycline Hyclate13 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: $558.90

9 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Madeline Nguyen$558.90
  2. Specialty average$769.99

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

770 optometrist records list a practice address in Houston

They are 770 of the 61,221 NPPES records with a practice address in Houston, and 5,006 optometrist records in Texas.

All 770 in Houston → All 5,006 in Texas → Every provider in Houston →

Other optometrist records in Texas

  1. Matthew Aaker, O.D.Universal City, TX1518394410
  2. Brad Aaron, O.D.New Boston, TX1073588810
  3. Michelle Aaron, O.D.San Antonio, TX1306916291
  4. Gary Abbott, ODRandolph Afb, TX1194880385
  5. Fortuna Abebe, ODHouston, TX1073185278
  6. Larry Abernathy, O. D.Abilene, TX1861539363
  7. Rayan Abilmouna, O.D.Houston, TX1275971145
  8. Omar Aborahma, ODCarrollton, TX1376479311
  9. Aby Abraham, O.D.Quinlan, TX1770776338
  10. Erin Abraham, ODDallas, TX1598440505

Common questions

What is Madeline Diep Nguyen, O.D.'s NPI number?

Madeline Diep Nguyen, O.D.'s National Provider Identifier (NPI) is 1366456469, issued on Jul 27, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Madeline Diep Nguyen, O.D. located?

The NPPES record lists a practice address at 505 J Davis Armistead Bldg, Houston, TX, 77204. Phone: (713) 743-2020. Providers update this record themselves, so call before visiting.

How can I verify Madeline Diep Nguyen, O.D.'s license?

NPPES lists Texas license number 6950T, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.

How much does Madeline Diep Nguyen, O.D. prescribe under Medicare Part D?

In 2024, Madeline Diep Nguyen, O.D. had 40 Medicare Part D claims for 19 beneficiaries; the average among optometrist prescribers was 277. 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.