NPI registry status
Active
2026 NPPES data Physician Assistant NPI 1831668508 PA-C
Verify on CMS → Peter Trinh, PA-C
Physician Assistant in Long Beach, 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 149,975 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
728
Medicare Part D claims · 488 beneficiaries · Physician Assistant avg: 790
Generic prescribing
64%
generic claims · 36% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
50.8/100
▼ 32 pts below national avg 83.1 · Mid-tier
Industry payments
$1.1K
13 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
Peter Trinh, PA-C reported a CMS MIPS final score of 50.8/100 - below the 83.1 national average - and filed 728 Medicare Part D claims in 2023.
- 50.8/100
- MIPS score · -32 vs avg
- 728
- Part D claims, 2023
- 64%
- generic prescribing
- $1.1K
- industry payments (Sunshine Act)
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.
Peter Trinh, PA-C's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
51 4th percentile higher than 4% 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 Peter Trinh, PA-C sits
This provider among physician assistant peers
Across the 27,054 physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Peter Trinh, PA-C writes more Part D claims than 77% of them and scores higher on MIPS quality than 2% - 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 physician assistant peer from a representative sample of 60; the gold marker is Peter Trinh, PA-C. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Peter Trinh, PA-C?
Below national averagePrimary specialty
Physician Assistant
Medicare Part D claims
728 8% vs specialty avg
MIPS final score
50.8/100 32.3 pts vs avg
Specialty distribution in California
How Physician Assistant compares to other specialties among California providers
Medicare quality performance, MIPS
Peter Trinh, PA-C's 2023 MIPS final score plotted against the Physician Assistant national average
- MIPS Final Score
- 50.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Physician Assistant) - 50.8/100 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).
Peter Trinh, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 3833 WORSHAM AVE STE 300, Long Beach, CA, 90808, with a listed phone of (562) 595-5421. NPI 1831668508 was issued on 11/24/2018.
Medicare Part D records for calendar year 2023 show 728 prescription claims written by this provider, covering 488 Medicare beneficiaries and totaling roughly $141K in drug spend, split 36% brand-name and 64% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 50.8/100 for the 2023 performance year (Quality 69.3, Cost 76.8), compared with the national average of 83.1.
Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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 | 1831668508 |
|---|---|
| Specialty | Physician Assistant |
| Credentials | PA-C |
| Gender | Male |
| NPI Issued | 11/24/2018 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
50.7596
Final Score
Avg: 83.1
69.2903
Quality
76.8115
Cost
Reporting: Group practice
Hospital and facility affiliations
Facilities where Peter Trinh, PA-C 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.
LA Jolla Gastroenterology Medical Group, Inc
La Jolla, 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 Peter Trinh, PA-C. Source: openpaymentsdata.cms.gov.
Total received
$1.1K
Largest payer
Phathom Pharmaceuticals, 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 Peter Trinh, PA-C. To verify Peter Trinh, PA-C'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 · Above average
Peter Trinh, PA-C - brand share 36.0%
Physician Assistant average
36% brand-name claims vs 64% generic, on 728 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.
728
Total Claims
$141K
Total Drug Cost
488
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,001
- Total Day Supply
- 18,187
- Brand vs Generic
- 36% brand / 64% generic
- Brand Drug Cost
- $125K
- Generic Drug Cost
- $16K
- Antibiotic Claims
- 26
Patient Demographics
- Average Patient Age
- 71.1 years
- Avg HCC Risk Score
- 1.19
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 48, 65-74: 279, 75-84: 140, 85+: 21
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Peter Trinh, PA-C prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
109 claims
- Clenpiq
Clenpiq
68 claims
- Plenvu
Plenvu
62 claims
- Linzess
Linzess
49 claims
- Omeprazole 36
Omeprazole
36 claims
- Famotidine 22
Famotidine
22 claims
- Ondansetron Odt 12
Ondansetron Odt
12 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 109 |
| Clenpiq Sod Picosulf/Mag Ox/Citric Ac | 68 |
| Plenvu Peg3350/Sod Sul/Nacl/Kcl/Asb/C | 62 |
| Linzess Linaclotide | 49 |
| Omeprazole | 36 |
| Famotidine | 22 |
| Ondansetron Odt Ondansetron | 12 |
| Gavilyte-C "Peg3350/Sod Sulf | N/A |
| Gavilyte-G "Peg3350/Sod Sulf | N/A |
| Sod Sulf-Potass Sulf-Mag Sulf "Sodium | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Physician Assistant Overview
How Peter Trinh, PA-C fits within the Physician Assistant landscape nationally.
149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider
Peter Trinh, PA-C's 728 claims are below the specialty average of 790.
Nearby Physician Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Trinh.
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 →
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 Physician Assistant 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Peter Trinh, PA-C's specialty? ▼
Peter Trinh, PA-C specializes in Physician Assistant and practices in Long Beach, California. Credentials: PA-C.
How much does Peter Trinh, PA-C prescribe under Medicare Part D? ▼
In 2023, Peter Trinh, PA-C wrote 728 Medicare Part D claims totaling $141K in drug costs for 488 beneficiaries.
What is Peter Trinh, PA-C's Medicare quality score? ▼
Peter Trinh, PA-C has a CMS MIPS Final Score of 50.8/100 (Quality: 69.3, Cost: 76.8). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Peter Trinh, PA-C located? ▼
Peter Trinh, PA-C is located at 3833 WORSHAM AVE STE 300, Long Beach, CA, 90808. Phone: (562) 595-5421.
What is Peter Trinh, PA-C's NPI number? ▼
Peter Trinh, PA-C's National Provider Identifier (NPI) is 1831668508, issued on 11/24/2018.
Does Peter Trinh, PA-C prescribe more brand-name or generic drugs? ▼
Peter Trinh, PA-C's prescribing is 36% brand-name and 64% generic drugs by claim count, with $125K in brand drug costs.
How many Physician Assistant providers are there in the US? ▼
There are 149,975 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 Peter Trinh, PA-C prescribe most often? ▼
Based on 2023 Medicare Part D data, Peter Trinh, PA-C's most frequently prescribed drugs include Pantoprazole Sodium, Clenpiq, Plenvu. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Peter Trinh, PA-C accept Medicare? ▼
Peter Trinh, PA-C appears in CMS Medicare data with 728 Part D claims and 488 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Peter Trinh, PA-C's credentials? ▼
Peter Trinh, PA-C's NPI is 1831668508 with credentials PA-C. 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.