NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1437730777 PA
Verify on CMS → Frank Nguyen, PA
Physician Assistant in Chino, 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 150,974 in Physician Assistant, 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
1K
Medicare Part D claims · 292 beneficiaries · Physician Assistant avg: 790
What the federal data shows
Frank Nguyen, PA filed 1,050 Medicare Part D claims in 2023 as a Physician Assistant in Chino, California.
- 1K
- Part D claims, 2023
- ≥76th
- 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 1437730777 · Physician Assistant
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-MID · BOOK-MID · PHOTO-ENUM
- NPI-10 1437730777
- ENUM-RECENT 2021
- TAX-MEGA 151K Physician Assistant
- RX-MID 1,050
- BOOK-MID 13,402 in California
- PHOTO-ENUM Kylie Zaccaria · 2021
Frank Nguyen, PA's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,050 ≥ 76th percentile 76% 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 Frank Nguyen, PA?
Quality data not reportedPrimary specialty
Physician Assistant
Medicare Part D claims
1,050 33% vs specialty avg
Specialty distribution in California
How Physician Assistant 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 Physician Assistant. 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 | 1437730777 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA |
| Gender | Male |
| NPI Issued | 04/19/2021 |
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 Frank Nguyen, PA. To verify Frank Nguyen, PA'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
1,050
Total Claims
$89K
Total Drug Cost
292
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 2,266
- Total Day Supply
- 64,065
- Generic Drug Cost
- $27K
- Antibiotic Claims
- 56
Patient Demographics
- Average Patient Age
- 70.4 years
- Avg HCC Risk Score
- 1.38
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 39, 65-74: 166, 75-84: 62, 85+: 25
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Frank Nguyen, PA prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
78 claims
- Atorvastatin Calcium
Atorvastatin Calcium
77 claims
- Losartan Potassium
Losartan Potassium
65 claims
- Metformin Hcl
Metformin Hcl
45 claims
- Lisinopril 29
Lisinopril
29 claims
- Fluticasone Propio… 26
Fluticasone Propionate
26 claims
- Levothyroxine Sodium 26
Levothyroxine Sodium
26 claims
- Naproxen 22
Naproxen
22 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 78 |
| Atorvastatin Calcium | 77 |
| Losartan Potassium | 65 |
| Metformin Hcl | 45 |
| Lisinopril | 29 |
| Fluticasone Propionate | 26 |
| Levothyroxine Sodium | 26 |
| Naproxen | 22 |
| Benazepril Hcl | 20 |
| Mupirocin | 17 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Frank Nguyen, PA fits within the Physician Assistant landscape nationally.
150,974
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Frank Nguyen, PA's 1,050 claims are above the specialty average of 790.
Nationwide Physician Assistant 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 (2021)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Physician Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Nguyen.
One of 13,402 Physician Assistant providers enrolled in California, 5 are shown here.
Dr. Marcia -Galbraith
PA
Stockton, CA
Dr. Danny Abad
PA
Orange, CA
Dr. Lea Dominique Abadies
PA
Tustin, CA
Dr. Rea Elizabeth Abaniel
P.A.-C
Seal Beach, CA
Dr. Ramina Abbasi
PA-C
Signal Hill, CA
Compare Physician Assistant nationally: see state-by-state distribution →
Frequently Asked Questions
What is Frank Nguyen, PA's specialty? ▼
Frank Nguyen, PA specializes in Physician Assistant and practices in Chino, California. Credentials: PA.
How much does Frank Nguyen, PA prescribe under Medicare Part D? ▼
In 2023, Frank Nguyen, PA wrote 1,050 Medicare Part D claims totaling $89K in drug costs for 292 beneficiaries.
Where is Frank Nguyen, PA located? ▼
Frank Nguyen, PA is located at 13768 ROSWELL AVE STE 118&218, Chino, CA, 91710. Phone: (909) 591-8200.
What is Frank Nguyen, PA's NPI number? ▼
Frank Nguyen, PA's National Provider Identifier (NPI) is 1437730777, issued on 04/19/2021.
How many Physician Assistant providers are there in the US? ▼
There are 150,974 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does Frank Nguyen, PA prescribe most often? ▼
Based on 2023 Medicare Part D data, Frank Nguyen, PA's most frequently prescribed drugs include Amlodipine Besylate, Atorvastatin Calcium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Frank Nguyen, PA accept Medicare? ▼
Frank Nguyen, PA appears in CMS Medicare data with 1,050 Part D claims and 292 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Frank Nguyen, PA's credentials? ▼
Frank Nguyen, PA's NPI is 1437730777 with credentials PA. 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.