Bac Nguyen, MD
NPI 1851400527 · Otolaryngology Physician · West Covina, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Bac Nguyen, MD is a Otolaryngology Physician provider in West Covina, CA (NPI 1851400527).
Provider details
- NPI number
- 1851400527
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- G79012 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
4,426 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,368 | $87 |
| Removal of Foreign Body in Ear Canal69200 | 720 | $49 |
| Repair of Eardrum69610 | 500 | $369 |
| Diagnostic Exam of Nasal Passages Using an Endoscope31231 | 465 | $185 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 421 | $72 |
| Diagnostic Exam of Voice Box Using an Endoscope With Mirror31505 | 401 | $88 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Fluticasone Propionate | 467 | 179 |
| Omeprazole | 340 | 123 |
| Pantoprazole Sodium | 191 | 73 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 159 | 75 |
| Levocetirizine Dihydrochloride | 153 | 46 |
| Mupirocin | 61 | 35 |
| Famotidine | 59 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$484 across 13 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
- 2006-08-29
- Last updated
- 2008-07-17
Frequently asked questions
- What is Bac Nguyen's NPI number?
- Bac Nguyen's National Provider Identifier (NPI) is 1851400527, 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 Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Bac Nguyen located?
- Bac Nguyen's practice location on file with NPPES is 933 S Sunset Avenue, West Covina, CA 91790.
- What is Bac Nguyen's phone number?
- The practice phone number listed in the NPPES registry for Bac Nguyen is (626) 962-6811.
- 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 (1851400527) is active in the NPPES registry as of the last update on 2008-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.