Bac Hai Nguyen, MD
Otolaryngology Physician · West Covina, CA
Bac Hai Nguyen, MD is an otolaryngology physician with a practice address in West Covina, California, and NPI 1851400527, issued on Aug 29, 2006. Check the license (California G79012, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Bac Hai Nguyen
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License number
- G79012 CA
Self-reported in NPPES; status is on the state search - Practice location
- 933 S Sunset Avenue, West Covina, CA 91790
- Phone
- (626) 962-6811
- Enumerated
- Aug 29, 2006
- Record last updated
- Jul 17, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (626) 960-9520
- Medicaid ID
- 00G790120 CA
- Medicare enrollment
- Enrolled (PECOS I20080221000180); may accept Medicare assignment
- Medical or professional school
- The General Medical College, 1992
- Entity
- Type 1 · individual
8 nearest otolaryngology physician records → All 1,212 in California → Look up another NPI →
Verify Bac Hai Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79012Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average otolaryngology physician in 2024
2,272 Medicare Part D claims for 588 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 25 claims were for opioids.
Most prescribed
- Fluticasone Propionate467 claims
- Omeprazole340 claims
- Pantoprazole Sodium191 claims
- Tobramycin-Dexamethasone159 claims
- Levocetirizine Dihydrochloride153 claims
- Mupirocin61 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 MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $484.48
13 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bac Hai Nguyen among 1,212 otolaryngology physician records in California
Bac Hai Nguyen, MD is one of 1,212 otolaryngology physician records with a practice address in California. 80% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 52% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1992 · median 2004 among the 818 with a school on file
- Record last updated2008 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in California
There are 1,212 otolaryngology physician records in California.
All 1,212 in California → Every provider in West Covina → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- James Yeh, M.D.West Covina, CA 917901699715839
- Stuart McCarthy, M.D.Upland, CA 917861932105715
- Clara Olcott, M.D.Upland, CA 917861215291612
- Veling Tsai, M.D., J.D.Alhambra, CA 918011619190378
- Allan Yung, MDAlhambra, CA 918011831269323
- Tony Shum, M.D.San Gabriel, CA 917761740228998
- Leon Bachoura, M.D.San Dimas, CA 917731821167925
- Nader Kalantar, M.D.San Dimas, CA 917731598854978
Common questions
What is Bac Hai Nguyen, MD's NPI number?
Bac Hai Nguyen, MD's National Provider Identifier (NPI) is 1851400527, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Bac Hai Nguyen, MD located?
The NPPES record lists a practice address at 933 S Sunset Avenue, West Covina, CA, 91790. Phone: (626) 962-6811. Providers update this record themselves, so call before visiting.
How can I verify Bac Hai Nguyen, MD's license?
NPPES lists California license number G79012, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Bac Hai Nguyen, MD prescribe under Medicare Part D?
In 2024, Bac Hai Nguyen, MD had 2,272 Medicare Part D claims for 588 beneficiaries; the average among otolaryngology physician prescribers was 541. Part D covers Medicare prescriptions only.
What is Bac Hai Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 0 of 100. 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.