NPI registry status
Active
2026 NPPES data Specialist NPI 1144330051 MD
Verify on CMS → Victor Nguyen, MD
Specialist in Murrieta, 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 69,608 in Specialist, 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
18K
Medicare Part D claims · 1K beneficiaries · Specialist avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.6K
76 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Victor Nguyen, MD filed 17,713 Medicare Part D claims in 2023 as a Specialist in Murrieta, California, prescribing 89% generic.
- 18K
- Part D claims, 2023
- 89%
- generic prescribing
- $1.6K
- industry payments (Sunshine Act)
- ≥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.
CMS NPPES provider registry desk
NPI 1144330051 · Specialist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-HEAVY · BOOK-MID · PHOTO-ENUM
- NPI-10 1144330051
- ENUM-LEGACY 2006
- TAX-MEGA 70K Specialist
- RX-HEAVY 18K claims
- BOOK-MID 6,672 in California
- PHOTO-ENUM Bruce Berkowitz · 2006
Victor Nguyen, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
17,713 ≥ 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
What does the federal data show about Victor Nguyen, MD?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
17,713 12× vs specialty avg
Specialty distribution in California
How Specialist 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 Specialist. 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).
Practice Address
Provider Details
| NPI | 1144330051 |
|---|---|
| Specialty | Specialist |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/30/2006 |
Hospital and facility affiliations
Facilities where Victor Nguyen, MD 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.
Healthcare Crossing Corporation
Hemet, 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 Victor Nguyen, MD. Source: openpaymentsdata.cms.gov.
Total received
$1.6K
Largest payer
ABBVIE INC.
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 Victor Nguyen, MD. To verify Victor Nguyen, MD'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 · Typical
Victor Nguyen, MD - brand share 11.0%
Specialist average
11% brand-name claims vs 89% generic, on 17,713 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.
17,713
Total Claims
$1.9M
Total Drug Cost
1,270
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 42,796
- Total Day Supply
- 1,256,380
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $1.4M
- Generic Drug Cost
- $489K
- Opioid Claims
- 920 (5.2% rate)
- Antibiotic Claims
- 299
Patient Demographics
- Average Patient Age
- 76.2 years
- Avg HCC Risk Score
- 1.59
- Gender Split
- 51% female / 49% male
- Age Distribution
- <65: 36, 65-74: 511, 75-84: 535, 85+: 188
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Victor Nguyen, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Atorvastatin Calcium
Atorvastatin Calcium
1,041 claims
- Levothyroxine Sodium
Levothyroxine Sodium
741 claims
- Amlodipine Besylate
Amlodipine Besylate
649 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
627 claims
- Lisinopril
Lisinopril
514 claims
- Metformin Hcl
Metformin Hcl
481 claims
- Hydrocodone-Acetam…
Hydrocodone-Acetaminophen
428 claims
- Losartan Potassium 400
Losartan Potassium
400 claims
| Drug | Claims |
|---|---|
| Atorvastatin Calcium | 1,041 |
| Levothyroxine Sodium | 741 |
| Amlodipine Besylate | 649 |
| Rosuvastatin Calcium | 627 |
| Lisinopril | 514 |
| Metformin Hcl | 481 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 428 |
| Losartan Potassium | 400 |
| Pantoprazole Sodium | 392 |
| Tamsulosin Hcl | 380 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Victor Nguyen, MD fits within the Specialist landscape nationally.
69,608
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Victor Nguyen, MD's 17,713 claims are above the specialty average of 1,474.
Nationwide Specialist peers with similar MIPS or enrollment year
Two federal-record peer sets for Nguyen, both outside California so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Specialist Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Nguyen.
One of 6,672 Specialist providers enrolled in California, 5 are shown here.
Adrienne Abad Santos
San Francisco, CA
Dr. Brenda Abarca
MD
Torrance, CA
Dr. Fatemeh Abbasi
PT
Van Nuys, CA
Dr. Erlinda Abcede
M.D.
Cudahy, CA
Dr. Maher Abdallah
M.D.
Palm Springs, CA
Compare Specialist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Victor Nguyen, MD's specialty? ▼
Victor Nguyen, MD specializes in Specialist and practices in Murrieta, California. Credentials: MD.
How much does Victor Nguyen, MD prescribe under Medicare Part D? ▼
In 2023, Victor Nguyen, MD wrote 17,713 Medicare Part D claims totaling $1.9M in drug costs for 1,270 beneficiaries.
Where is Victor Nguyen, MD located? ▼
Victor Nguyen, MD is located at 39765 DATE ST,, Murrieta, CA, 92563. Phone: (951) 894-4665.
What is Victor Nguyen, MD's NPI number? ▼
Victor Nguyen, MD's National Provider Identifier (NPI) is 1144330051, issued on 08/30/2006.
Does Victor Nguyen, MD prescribe more brand-name or generic drugs? ▼
Victor Nguyen, MD's prescribing is 11% brand-name and 89% generic drugs by claim count, with $1.4M in brand drug costs.
Does Victor Nguyen, MD prescribe opioids? ▼
Yes, Victor Nguyen, MD had 920 opioid claims in 2023 with an opioid prescribing rate of 5.2%.
How many Specialist providers are there in the US? ▼
There are 69,608 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Victor Nguyen, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Victor Nguyen, MD's most frequently prescribed drugs include Atorvastatin Calcium, Levothyroxine Sodium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Victor Nguyen, MD accept Medicare? ▼
Victor Nguyen, MD appears in CMS Medicare data with 17,713 Part D claims and 1,270 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Victor Nguyen, MD's credentials? ▼
Victor Nguyen, MD's NPI is 1144330051 with credentials MD. 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.