NPPES file of Aug 9, 2026

Bac Tien Nguyen, M.D.

Ophthalmology Physician · Houston, TX

Bac Tien Nguyen, M.D. is an ophthalmology physician with a practice address in Houston, Texas, and NPI 1871853077, issued on May 22, 2012. Check the license (Texas R1256, 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
1871853077
Name
Bac Tien Nguyen
Credential
M.D.
Primary taxonomy
Ophthalmology Physician 207W00000X
License numbers
R1256 TX
A142273 CA
Self-reported in NPPES; status is on the state search
Practice location
3100 Weslayan St Ste 400, Houston, TX 77027
Phone
(713) 526-1600
Enumerated
May 22, 2012
Record last updated
Jun 2, 2022
Fax
(713) 526-0679
Medicare enrollment
Enrolled (PECOS I20170504001518); accepts Medicare assignment
Medical or professional school
University Of California, San Diego School Of Medicine, 2012
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 3100 Weslayan St Ste 400

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

  1. Fortuna Abebe, ODOptometrist1073185278
  2. Karlie Bonem, O.D.Optometrist1063827988
  3. Aida Bounama, M.D.Ophthalmology Physician1336405463
  4. Maria Choudhary, M.D.Ophthalmology Physician1619299781
  5. Evan Dackowski, MDOphthalmology Physician1275119661
  6. Denice Espinosa, CRNACertified Registered Nurse Anesthetist1659371706

Verify Bac Tien Nguyen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license R1256
    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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5.4 times the Medicare Part D claims of the average ophthalmology physician in 2024

8,196 Medicare Part D claims for 1,482 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.

  1. Bac Nguyen8,196
  2. Specialty average1,518

Most prescribed

  1. Latanoprost1,896 claims
  2. Dorzolamide-Timolol994 claims
  3. Brimonidine Tartrate830 claims
  4. Lumigan811 claims
  5. Prednisolone Acetate453 claims
  6. Combigan326 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): 83.7 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 score90.5
  2. Costout of 100 · 30%63.1
  3. Promoting interoperabilitynot scored (reweighted)
  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: $56,594.85

151 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. 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. Bac Nguyen$56,595
  2. Specialty average$4,535

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. Berkeley Eye Institute, PLLCEl Campo, TX

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

Bac Tien Nguyen among 1,514 ophthalmology physician records in Texas

Bac Tien Nguyen, 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 2012, is newer than 73% of them.

  • NPI issued2012 · 73% of these records are older, 24% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated2012 · median 2003 among the 1,052 with a school on file
  • Record last updated2022 · 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. Aida Bounama, M.D.Houston, TX 770271336405463
  2. Michael Caplan, MDHouston, TX 770271225034549
  3. Maria Choudhary, M.D.Houston, TX 770271619299781
  4. Robert Coffee, MDHouston, TX 770271558475582
  5. Gioconda Mojica, M.D.Houston, TX 770271578711628
  6. Nimisha Patel, M.D.Houston, TX 770271346449600
  7. Usha Pinninti, MDHouston, TX 770271134323892
  8. Andrew Salem, M.D.Houston, TX 770271114218278

Common questions

What is Bac Tien Nguyen, M.D.'s NPI number?

Bac Tien Nguyen, M.D.'s National Provider Identifier (NPI) is 1871853077, issued on May 22, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Bac Tien Nguyen, M.D. located?

The NPPES record lists a practice address at 3100 Weslayan St Ste 400, Houston, TX, 77027. Phone: (713) 526-1600. Providers update this record themselves, so call before visiting.

How can I verify Bac Tien Nguyen, M.D.'s license?

NPPES lists Texas license number R1256, 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 Bac Tien Nguyen, M.D. prescribe under Medicare Part D?

In 2024, Bac Tien Nguyen, M.D. had 8,196 Medicare Part D claims for 1,482 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.

What is Bac Tien Nguyen, M.D.'s MIPS final score?

The 2023 MIPS final score is 83.7 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.