NPPES file of Aug 9, 2026

Yen Dang Nieman, M.D.

Ophthalmology Physician · Austin, TX

Yen Dang Nieman, M.D. is an ophthalmology physician with a practice address in Austin, Texas, and NPI 1295825784, issued on Oct 13, 2006. Check the license (Texas L6337, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1295825784
Name
Yen Dang Nieman
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
L6337 TX
E-4146 AR
Self-reported in NPPES; status is on the state search
Practice location
5717 Balcones Dr, Austin, TX 78731
Phone
(512) 327-7000
Enumerated
Oct 13, 2006
Record last updated
Jan 3, 2024
Fax
(512) 314-1660
Medicare enrollment
Enrolled (PECOS I20070205000129); accepts Medicare assignment
Medical or professional school
University Of Texas Medical School At Houston, 1999
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 5717 Balcones Dr

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

  1. Kyla Aschenbeck, MDOphthalmology Physician1982091674
  2. Angeline Derham, MDOphthalmology Physician1255795217
  3. Tanya Khan, M.D.Ophthalmic Plastic and Reconstructive Surgery Physician1114242922
  4. Jeffery Lane, O.D.Optometrist1285619932
  5. William Lipham, M.D.Ophthalmic Plastic and Reconstructive Surgery Physician1528053717
  6. Isaac Loose, M.D.Retina Specialist (Ophthalmology) Physician1821075664

Verify Yen Dang Nieman in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L6337
    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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15% more Medicare Part D claims than the average ophthalmology physician in 2024

1,748 Medicare Part D claims for 470 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 56% of claims.

  1. Yen Nieman1,748
  2. Specialty average1,518

Most prescribed

  1. Restasis265 claims
  2. Prednisolone Acetate243 claims
  3. Cyclosporine213 claims
  4. Latanoprost169 claims
  5. Neomycin-Polymyxin-Dexameth100 claims
  6. Valacyclovir93 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 92.8 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score87.7
  2. Costout of 100 · 30%89.2
  3. Promoting interoperabilityout of 100 · 25%99.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $740.65

21 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Yen Nieman$740.65
  2. Specialty average$4,535.02

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. Texan Eye, PAAustin, TX

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

Yen Dang Nieman among 1,514 ophthalmology physician records in Texas

Yen Dang Nieman, M.D. 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 2006, is newer than 22% of them.

  • NPI issued2006 · 22% of these records are older, 48% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1999 · 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.

The 8 ophthalmology physician records with the nearest ZIP codes

  1. Kyla Aschenbeck, MDAustin, TX 787311982091674
  2. Gerald Clarke, M.D.Austin, TX 787311104988955
  3. Angeline Derham, MDAustin, TX 787311255795217
  4. Thomas Henderson, M.D.Austin, TX 787311407045339
  5. Farhan Irshad, MD, FACSAustin, TX 787311871775650
  6. Oscar Jackson, M.D.Austin, TX 787311215019278
  7. Rafaella Penteado, MDAustin, TX 787311780213298
  8. Ricardo SalinasAustin, TX 787311710447214

Common questions

What is Yen Dang Nieman, M.D.'s NPI number?

Yen Dang Nieman, M.D.'s National Provider Identifier (NPI) is 1295825784, issued on Oct 13, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Yen Dang Nieman, M.D. located?

The NPPES record lists a practice address at 5717 Balcones Dr, Austin, TX, 78731. Phone: (512) 327-7000. Providers update this record themselves, so call before visiting.

How can I verify Yen Dang Nieman, M.D.'s license?

NPPES lists Texas license number L6337, 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 Yen Dang Nieman, M.D. prescribe under Medicare Part D?

In 2024, Yen Dang Nieman, M.D. had 1,748 Medicare Part D claims for 470 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Yen Dang Nieman, M.D.'s MIPS final score?

The 2023 MIPS final score is 92.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.

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.