NPI registry status
Active
2026 NPPES data Psychiatry Physician NPI 1740497346 M.D.
Verify on CMS → Paul Nguyen, M.D.
Psychiatry Physician in N Las Vegas, Nevada.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 53,171 in Psychiatry 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
9K
Medicare Part D claims · 326 beneficiaries · Psychiatry Physician avg: 1K
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · Penalty band
Industry payments
$2.0K
119 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Paul Nguyen, M.D. reported a CMS MIPS final score of 0/100 - below the 83.1 national average - and filed 9,308 Medicare Part D claims in 2023.
- 0/100
- MIPS score · -83 vs avg
- 9K
- Part D claims, 2023
- 93%
- generic prescribing
- Likely
- board-certified (heuristic)
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.
Paul Nguyen, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
0 0th percentile higher than 0% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Paul Nguyen, M.D. sits
This provider among psychiatry physician peers
Across the 4,659 psychiatry physician providers who report both Medicare Part D prescribing and a MIPS quality score, Paul Nguyen, M.D. writes more Part D claims than 98% of them and scores higher on MIPS quality than 0% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one psychiatry physician peer from a representative sample of 60; the gold marker is Paul Nguyen, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
✓
Board certification likely (heuristic, not verified)
Paul Nguyen, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting - 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 Paul Nguyen, M.D.?
Below national averagePrimary specialty
Psychiatry Physician
Medicare Part D claims
9,308 9× vs specialty avg
MIPS final score
0/100 83.1 pts vs avg
Specialty distribution in Nevada
How Psychiatry Physician compares to other specialties among Nevada providers
Medicare quality performance, MIPS
Paul Nguyen, M.D.'s 2023 MIPS final score plotted against the Psychiatry Physician national average
- MIPS Final Score
- 0/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Psychiatry Physician) - 0/100 vs national avg 83.1
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).
Paul Nguyen, M.D. appears in the CMS NPPES registry as a Psychiatry Physician provider holding M.D. credentials at 2031 MCDANIEL ST STE 230, N Las Vegas, NV, 89030, with a listed phone of (702) 405-9080. NPI 1740497346 was issued on 05/16/2007.
Medicare Part D records for calendar year 2023 show 9,308 prescription claims written by this provider, covering 326 Medicare beneficiaries and totaling roughly $1.6 million in drug spend, split 7% brand-name and 93% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.
Psychiatry Physician is a high-volume specialty nationwide, with 53,171 enrolled providers across 56 states and an average of 1,038 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 | 1740497346 |
|---|---|
| Specialty | Psychiatry Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 05/16/2007 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
0
Final Score
Avg: 83.1
0
Quality
Reporting: Individual
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 Paul Nguyen, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$2.0K
Largest payer
ITI, Inc. (d/b/a Intra-Cellular Therapies, 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.
Brand vs generic prescribing mix · Generic-heavy
Paul Nguyen, M.D. - brand share 7.0%
Psychiatry Physician average
7% brand-name claims vs 93% generic, on 9,308 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.
9,308
Total Claims
$1.6M
Total Drug Cost
326
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,739
- Total Day Supply
- 289,101
- Brand vs Generic
- 7% brand / 93% generic
- Brand Drug Cost
- $1.4M
- Generic Drug Cost
- $231K
Patient Demographics
- Average Patient Age
- 61.9 years
- Avg HCC Risk Score
- 1.83
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 156, 65-74: 98, 75-84: 61, 85+: 11
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Paul Nguyen, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Trazodone Hcl
Trazodone Hcl
892 claims
- Buspirone Hcl
Buspirone Hcl
650 claims
- Quetiapine Fumarate
Quetiapine Fumarate
631 claims
- Alprazolam
Alprazolam
535 claims
- Sertraline Hcl
Sertraline Hcl
426 claims
- Bupropion Hcl Sr 344
Bupropion Hcl Sr
344 claims
- Duloxetine Hcl 310
Duloxetine Hcl
310 claims
- Risperidone 304
Risperidone
304 claims
| Drug | Claims |
|---|---|
| Trazodone Hcl | 892 |
| Buspirone Hcl | 650 |
| Quetiapine Fumarate | 631 |
| Alprazolam | 535 |
| Sertraline Hcl | 426 |
| Bupropion Hcl Sr Bupropion Hcl | 344 |
| Duloxetine Hcl | 310 |
| Risperidone | 304 |
| Oxcarbazepine | 280 |
| Clonazepam | 259 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Psychiatry Physician Overview
How Paul Nguyen, M.D. fits within the Psychiatry Physician landscape nationally.
53,171
Psychiatry Physician Providers in US
56
States with Psychiatry Physician
1,038
Avg Claims per Provider
Paul Nguyen, M.D.'s 9,308 claims are above the specialty average of 1,038.
Nearby Psychiatry Physician Providers in Nevada
Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as Nguyen.
Dr. Christine Grace Adol
PMHNP-BC
Henderson, NV
Dr. Rodger Agre
M.D.
Incline Village, NV
Dr. Vasudha Ahuja
MD
Sparks, NV
Dr. Adekunle Ajayi
M.D.
Las Vegas, NV
Dr. Margarita Akopian
DO
North Las Vegas, NV
Compare Psychiatry 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 Nevada medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Psychiatry 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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Frequently Asked Questions
What is Paul Nguyen, M.D.'s specialty? ▼
Paul Nguyen, M.D. specializes in Psychiatry Physician and practices in N Las Vegas, Nevada. Credentials: M.D..
How much does Paul Nguyen, M.D. prescribe under Medicare Part D? ▼
In 2023, Paul Nguyen, M.D. wrote 9,308 Medicare Part D claims totaling $1.6M in drug costs for 326 beneficiaries.
What is Paul Nguyen, M.D.'s Medicare quality score? ▼
Paul Nguyen, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Paul Nguyen, M.D. located? ▼
Paul Nguyen, M.D. is located at 2031 MCDANIEL ST STE 230, N Las Vegas, NV, 89030. Phone: (702) 405-9080.
What is Paul Nguyen, M.D.'s NPI number? ▼
Paul Nguyen, M.D.'s National Provider Identifier (NPI) is 1740497346, issued on 05/16/2007.
Does Paul Nguyen, M.D. prescribe more brand-name or generic drugs? ▼
Paul Nguyen, M.D.'s prescribing is 7% brand-name and 93% generic drugs by claim count, with $1.4M in brand drug costs.
How many Psychiatry Physician providers are there in the US? ▼
There are 53,171 Psychiatry Physician providers across 56 states in the US. The average Psychiatry Physician provider writes 1,038 Medicare Part D claims per year.
What drugs does Paul Nguyen, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Paul Nguyen, M.D.'s most frequently prescribed drugs include Trazodone Hcl, Buspirone Hcl, Quetiapine Fumarate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Paul Nguyen, M.D. accept Medicare? ▼
Paul Nguyen, M.D. appears in CMS Medicare data with 9,308 Part D claims and 326 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Paul Nguyen, M.D.'s credentials? ▼
Paul Nguyen, M.D.'s NPI is 1740497346 with credentials M.D.. 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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
- 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
Compiled from official public sources by the PlainDoctor editorial team.
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.