Bac Nguyen, M.D.
NPI 1871853077 · Ophthalmology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bac Nguyen, M.D. is a Ophthalmology Physician provider in Houston, TX (NPI 1871853077).
Provider details
- NPI number
- 1871853077
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A142273 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,583 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 908 | $127 |
| Exam of Visual Field With Extended Testing92083 | 394 | $62 |
| Exam of the Internal Drainage System of Eye92020 | 382 | $27 |
| Imaging of Optic Nerve92133 | 297 | $35 |
| Photography of the Retina92250 | 234 | $36 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 93 | $25 |
| Imaging of Retina |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,896 | 680 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 994 | 312 |
| Brimonidine Tartrate | 830 | 287 |
| Bimatoprostbrand: Lumigan | 811 | 282 |
| Prednisolone Acetate | 453 | 237 |
| Brimonidine Tartrate/Timololbrand: Combigan | 326 | 120 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 321 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$56,595 across 151 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-22
- Last updated
- 2022-06-02
- Certified
- 2022-06-02
Frequently asked questions
- What is Bac Nguyen's NPI number?
- Bac Nguyen's National Provider Identifier (NPI) is 1871853077, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Bac Nguyen's specialty?
- Bac Nguyen is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Bac Nguyen located?
- Bac Nguyen's practice location on file with NPPES is 3100 Weslayan St Ste 400, Houston, TX 77027-5752.
- What is Bac Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Bac Nguyen is (713) 526-1600.
- Does Bac Nguyen accept Medicare?
- Bac Nguyen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Bac Nguyen's NPI active?
- Yes — Bac Nguyen's NPI (1871853077) is active in the NPPES registry as of the last update on 2022-06-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.