NPI registry status
Active
2026 NPPES data Family Medicine Physician NPI 1225063290 D.O.
Verify on CMS → Vu Nguyen, D.O.
Family Medicine Physician in San Jose, California.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,760 in Family Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
14K
Medicare Part D claims · 845 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$360.24
10 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Vu Nguyen, D.O. filed 14,456 Medicare Part D claims in 2023 as a Family Medicine Physician in San Jose, California, prescribing 92% generic.
- 14K
- Part D claims, 2023
- 92%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥98th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Vu Nguyen, D.O.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
14,456 ≥ 98th percentile 98% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Vu Nguyen, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Vu Nguyen, D.O.?
Quality data not reportedPrimary specialty
Family Medicine Physician
Medicare Part D claims
14,456 323% vs specialty avg
Specialty distribution in California
How Family Medicine Physician compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Vu Nguyen, D.O. appears in the CMS NPPES registry as a Family Medicine Physician provider holding D.O. credentials at 210 N JACKSON AVE, San Jose, CA, 95116, with a listed phone of (408) 251-6127. NPI 1225063290 was issued on 07/11/2006.
Medicare Part D records for calendar year 2023 show 14,456 prescription claims written by this provider, covering 845 Medicare beneficiaries and totaling roughly $978K in drug spend, split 7% brand-name and 92% generic by claim count.
Family Medicine Physician is a high-volume specialty nationwide, with 147,760 enrolled providers across 56 states and an average of 3,418 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1225063290 |
|---|---|
| Specialty | Family Medicine Physician |
| Credentials | D.O. |
| Gender | Male |
| NPI Issued | 07/11/2006 |
Hospital and facility affiliations
Facilities where Vu Nguyen, D.O. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Hai Hoang Nguyen MD Inc
San Jose, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Vu Nguyen, D.O.. Source: openpaymentsdata.cms.gov.
Total received
$360
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - California MBC 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Vu Nguyen, D.O.. To verify Vu Nguyen, D.O.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases
MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Generic-heavy
Vu Nguyen, D.O. - brand share 7.0%
Family Medicine Physician average
7% brand-name claims vs 92% generic, on 14,456 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
14,456
Total Claims
$978K
Total Drug Cost
845
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 33,889
- Total Day Supply
- 991,795
- Brand vs Generic
- 7% brand / 92% generic
- Brand Drug Cost
- $621K
- Generic Drug Cost
- $356K
- Antibiotic Claims
- 467
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 0.95
- Gender Split
- 52% female / 48% male
- Age Distribution
- <65: 34, 65-74: 420, 75-84: 259, 85+: 132
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Vu Nguyen, D.O. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
1,101 claims
- Triamcinolone Acet…
Triamcinolone Acetonide
868 claims
- Amlodipine Besylate
Amlodipine Besylate
814 claims
- Omeprazole
Omeprazole
760 claims
- Metformin Hcl
Metformin Hcl
712 claims
- Losartan Potassium
Losartan Potassium
688 claims
- Simvastatin
Simvastatin
491 claims
- Tamsulosin Hcl 391
Tamsulosin Hcl
391 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 1,101 |
| Triamcinolone Acetonide | 868 |
| Amlodipine Besylate | 814 |
| Omeprazole | 760 |
| Metformin Hcl | 712 |
| Losartan Potassium | 688 |
| Simvastatin | 491 |
| Tamsulosin Hcl | 391 |
| Fluticasone Propionate | 367 |
| Hydrochlorothiazide | 349 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Medicine Physician Overview
How Vu Nguyen, D.O. fits within the Family Medicine Physician landscape nationally.
147,760
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider
Vu Nguyen, D.O.'s 14,456 claims are above the specialty average of 3,418.
Nearby Family Medicine Physician Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Nguyen.
Dr. Omer Aba-Omer
MD
Santa Monica, CA
Dr. Michelle Ababa
MD
Wilmington, CA
Dr. Anna Tzeitel Abalos
MD
Roseville, CA
Dr. Adan Abarca
MD
Anaheim, CA
Dr. Lorraine Abate
M.D.
Sacramento, CA
Compare Family Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Family Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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How insurance networks affect your costs
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Frequently Asked Questions
What is Vu Nguyen, D.O.'s specialty? ▼
Vu Nguyen, D.O. specializes in Family Medicine Physician and practices in San Jose, California. Credentials: D.O..
How much does Vu Nguyen, D.O. prescribe under Medicare Part D? ▼
In 2023, Vu Nguyen, D.O. wrote 14,456 Medicare Part D claims totaling $978K in drug costs for 845 beneficiaries.
Where is Vu Nguyen, D.O. located? ▼
Vu Nguyen, D.O. is located at 210 N JACKSON AVE, San Jose, CA, 95116. Phone: (408) 251-6127.
What is Vu Nguyen, D.O.'s NPI number? ▼
Vu Nguyen, D.O.'s National Provider Identifier (NPI) is 1225063290, issued on 07/11/2006.
Does Vu Nguyen, D.O. prescribe more brand-name or generic drugs? ▼
Vu Nguyen, D.O.'s prescribing is 7% brand-name and 92% generic drugs by claim count, with $621K in brand drug costs.
How many Family Medicine Physician providers are there in the US? ▼
There are 147,760 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Vu Nguyen, D.O. prescribe most often? ▼
Based on 2023 Medicare Part D data, Vu Nguyen, D.O.'s most frequently prescribed drugs include Atorvastatin Calcium, Triamcinolone Acetonide, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Vu Nguyen, D.O. accept Medicare? ▼
Vu Nguyen, D.O. appears in CMS Medicare data with 14,456 Part D claims and 845 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Vu Nguyen, D.O.'s credentials? ▼
Vu Nguyen, D.O.'s NPI is 1225063290 with credentials D.O.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.