Dr. Bac Hai Nguyen, MD
- Medicare services, 2024
- 4,426
- Medicare patients, 2024
- 742
- Part D claims, 2024
- 2,272
- MIPS score, 2024
- 75
- Hospital affiliations
- 3
- Practice address
- 1115 S Sunset Ave, West Covina, CA 91790
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Queen of the Valley Hospital - Unit
Acute Care Hospital-Unit · West Covina, California
Find Dr. Nguyen's professional email, personal email and mobile number
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Dr. Bac Hai Nguyen is an otolaryngologist in West Covina, California
Dr. Nguyen practices at Queen of the Valley Hospital - Unit in West Covina, California.
Dr. Nguyen's NPI, 1851400527, was assigned on August 29, 2006. Dr. Nguyen graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1992. Dr. Nguyen holds California license G79012.
- NPI
- 1851400527NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5991889537
- NPI enumeration date
- August 29, 2006
- NPI status
- Active
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Bac Hai Nguyen practices at Queen of the Valley Hospital - Unit in West Covina, California
Dr. Nguyen's primary practice is Queen of the Valley Hospital - Unit, at 1115 S Sunset Ave, West Covina, CA 91790.
- Queen of the Valley Hospital - Unit1115 S Sunset Ave, West Covina, CA 91790
Source: Dmand AI Affiliation Data
Dr. Bac Hai Nguyen is affiliated with 4 sites of care
Dr. Nguyen's primary practice is Queen of the Valley Hospital - Unit in West Covina, California. Dr. Nguyen is also affiliated with Emanate Health Inter-Community Hospital. Dmand AI also links Dr. Nguyen to 1 more hospital and 1 physician office, each named with a free account. Dr. Nguyen's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Bac Hai Nguyen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nguyen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Queen of the Valley Hospital - Unit | Available with a free account |
| +3 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Bac Hai Nguyen is one of 1,107 otolaryngologists in California
Otolaryngology is Dr. Nguyen's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dr. Nguyen is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery. Dr. Nguyen is licensed in California.
Specialties and state licenses
- Otolaryngology, CaliforniaPrimary
Clinical focus
Dmand AI lists acute sinusitis, chronic ear infection, chronic nasal allergies, chronic sinusitis, ear eustachian tube disorders, ear infection, endoscopic sinus surgery and hearing loss and impairment among the conditions Dr. Nguyen treats.
Otolaryngologists near Dr. Nguyen
Counts of otolaryngologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Bac Hai Nguyen billed Medicare for 4,426 services in 2024
CMS data shows 4,426 Medicare services from Dr. Nguyen across 15 procedure codes in 2024, for 742 Medicare patients. Medicare paid $424,064 for them.
Dr. Nguyen's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 2,4852024: 2,2659%
- Office and hospital visits
- 2023: 2,4152024: 2,16111%
Where Dr. Nguyen's Medicare services took place, 2024
- In an office3,87287%
- In a facility55413%
Dr. Nguyen compared with the California median for otolaryngologists, 2024
- Dr. Nguyen
- California median
- Medicare services
- 4,426vs 6666.6 times
- Medicare patients
- 742vs 2962.5 times
- Part D claims
- 2,105vs 11817.8 times
Medians across 1,045 otolaryngologists in California with Dmand AI profiles that report each measure.
Dr. Nguyen's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Nguyen and other otolaryngologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Bac Hai Nguyen treated 742 Medicare patients in 2024, average age 75
CMS counts 742 Medicare patients who saw Dr. Nguyen in 2024. The largest group is 65 to 74, with 257 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 48% are also on Medicaid. Their average risk score is 1.82, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Nguyen's median patient age at 71, with 54% women.
Dr. Nguyen's Medicare patients by age, 2024
Dr. Nguyen's Medicare patients by sex, 2024
- Women43458%
- Men30842%
Chronic conditions among Dr. Nguyen's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis52%
- Diabetes51%
- Chronic kidney disease35%
- Ischemic heart disease32%
- Heart failure26%
- Osteoporosis24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Nguyen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Bac Hai Nguyen wrote 2,272 Medicare Part D claims in 2024
In 2024, Dr. Nguyen wrote 2,272 Medicare Part D claims for 588 patients. 95% of them were for generic drugs. CMS names the drug for 2,105 of them, across 33 drugs with 11 or more claims each, at $64,191 in total drug cost. In 2023, CMS named 2,285 claims across 37 drugs.
Dr. Nguyen's Part D claims by kind of drug, 2024
- Generic2,154 claims95%
- Brand-name118 claims5%
Dr. Nguyen's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Nguyen's Part D claims, 2024
- Opioids1%25 of 2,272 claims
- Antibiotics7%154 of 2,272 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,2852024: 2,1058%
Drugs named by CMS: 33 in 2024, 37 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Bac Hai Nguyen scored 75 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 75 out of 100 for Dr. Nguyen for performance year 2024, reported individually.
- MIPS final score, 2024
- 75 of 100
Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Bac Hai Nguyen received $2,970 in industry payments from 2016 to 2025
CMS Open Payments shows 93 general payments to Dr. Nguyen from 20 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Sanofi and Genzyme US Companies paid the most, $599.
General payments to Dr. Nguyen by program year, 2016 to 2025
General payments to Dr. Nguyen by kind, 2016 to 2025
- Food and beverage$2,87597%
- Education$953%
Companies that paid Dr. Nguyen the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Bac Hai Nguyen graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science
Dr. Nguyen graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1992.
- Medical school
- Board certified in otolaryngology
Source: Dmand AI Professional Profile Data
Dr. Bac Hai Nguyen accepts plans from 9 insurance carriers
Dr. Nguyen is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- Humana
- LA Care
- +1 more carriersWith a free account
Plan types Dr. Nguyen accepts, by number of carriers
- Medicare7
- PPO5
- HMO4
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Bac Hai Nguyen's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Bac Hai Nguyen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Bac Hai Nguyen's NPI number?
Dr. Bac Hai Nguyen's NPI number is 1851400527. It was assigned on August 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Bac Hai Nguyen?
Dr. Bac Hai Nguyen is an otolaryngologist in West Covina, California. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Bac Hai Nguyen practice?
Dr. Nguyen practices at 1115 S Sunset Ave, West Covina, CA 91790. Dr. Nguyen's primary practice is Queen of the Valley Hospital - Unit in West Covina, California. Dmand AI also links Dr. Nguyen to 1 hospital and 1 physician office.
What is Dr. Bac Hai Nguyen's medical license number?
Dr. Nguyen holds California license G79012.
Which hospitals is Dr. Bac Hai Nguyen affiliated with?
Dr. Nguyen is affiliated with Emanate Health Inter-Community Hospital. Dmand AI links Dr. Nguyen to 2 more hospitals.
Does Dr. Bac Hai Nguyen accept Medicare?
Yes. CMS data shows Dr. Nguyen billed Medicare for 4,426 services in 2024.
What is Dr. Bac Hai Nguyen's MIPS score?
Dr. Nguyen's MIPS final score for performance year 2024 is 75 out of 100, reported individually.
How many Medicare patients does Dr. Bac Hai Nguyen see?
CMS counts 742 Medicare patients who saw Dr. Nguyen in 2024, with an average age of 75.
Is Dr. Bac Hai Nguyen board certified?
Yes. Dr. Nguyen is board certified in otolaryngology by the American Board of Otolaryngology - Head and Neck Surgery.
What services does Dr. Bac Hai Nguyen bill to Medicare?
In 2024, Dr. Nguyen's most billed Medicare services were office visit, established patient (99213), surgery: ear (69200) and surgery: ear (69610).
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Where did Dr. Bac Hai Nguyen go to medical school?
Dr. Nguyen graduated from Chicago Medical School at Rosalind Franklin University of Medicine and Science in 1992.
What drugs does Dr. Bac Hai Nguyen prescribe most?
In 2024 Medicare Part D data, Dr. Nguyen's most prescribed drugs by claims were Fluticasone Propionate, Omeprazole and Pantoprazole Sodium.
Has Dr. Bac Hai Nguyen received payments from drug or device companies?
CMS Open Payments shows $2,970 in general payments to Dr. Nguyen from 20 companies from 2016 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Bac Hai Nguyen been practicing?
Dr. Nguyen graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Bac Hai Nguyen accept?
Dr. Nguyen is in network with 9 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
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