2026 NPPES data Pharmacist NPI 1861152746
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Catherine Trinh

Pharmacist 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 290,447 in Pharmacist, 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
485
Medicare Part D claims · 189 beneficiaries · Pharmacist avg: 135
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Catherine Trinh filed 485 Medicare Part D claims in 2023 as a Pharmacist in San Jose, California, prescribing 88% generic.

485
Part D claims, 2023
88%
generic prescribing

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.

Catherine Trinh's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

485 Top 38% higher than 62% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). This entry sits in this band. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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.

Source CMS Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about Catherine Trinh?

Quality data not reported

NPI registry status

Active

Issued 12/20/2021

NPI 1861152746

Primary specialty

Pharmacist

High-volume

290,447 US NPIs in this specialty

Medicare Part D claims

485 259% vs specialty avg

2023 prescription claims

Specialty avg: 135

Specialty distribution in California

How Pharmacist compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%
Largest specialties in California (% of in-state 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 Pharmacist. Verify directly:

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).

Catherine Trinh appears in the CMS NPPES registry as a Pharmacist provider at 275 HOSPITAL PKWY STE 625, San Jose, CA, 95119, with a listed phone of (408) 363-4479. NPI 1861152746 was issued on 12/20/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Trinh most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 485 prescription claims written by this provider, covering 189 Medicare beneficiaries and totaling roughly $76K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 91.1%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Pharmacist is a high-volume specialty nationwide, with 290,447 enrolled providers across 56 states and an average of 135 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

275 HOSPITAL PKWY STE 625
San Jose, CA 95119

Provider Details

NPI 1861152746
Specialty Pharmacist
Gender Female
NPI Issued 12/20/2021

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 Catherine Trinh. To verify Catherine Trinh'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

Catherine Trinh - brand share 12.0%
Pharmacist average

12% brand-name claims vs 88% generic, on 485 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.

485
Total Claims
$76K
Total Drug Cost
189
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
501
Total Day Supply
11,957
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$60K
Generic Drug Cost
$16K
Opioid Claims
442 (91.1% rate)

Patient Demographics

Average Patient Age
71.6 years
Avg HCC Risk Score
1.72
Gender Split
52% female / 48% male
Age Distribution
<65: 36, 65-74: 86, 75-84: 50, 85+: 17

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What Catherine Trinh prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
141
Buprenorphine
57
Morphine Sulfate Er
Morphine Sulfate
55
Methadone Hcl
47
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
42
Belbuca
Buprenorphine Hcl
31
Oxycodone Hcl
25
Buprenorphine-Naloxone
Buprenorphine Hcl/Naloxone Hcl
22
Hydromorphone Hcl
18
Fentanyl
12

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Pharmacist Overview

How Catherine Trinh fits within the Pharmacist landscape nationally.

290,447
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider

Catherine Trinh's 485 claims are above the specialty average of 135.

Nearby Pharmacist Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Trinh.

Compare Pharmacist 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 Pharmacist 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.

Frequently Asked Questions

What is Catherine Trinh's specialty?
Catherine Trinh specializes in Pharmacist and practices in San Jose, California.
How much does Catherine Trinh prescribe under Medicare Part D?
In 2023, Catherine Trinh wrote 485 Medicare Part D claims totaling $76K in drug costs for 189 beneficiaries.
Where is Catherine Trinh located?
Catherine Trinh is located at 275 HOSPITAL PKWY STE 625, San Jose, CA, 95119. Phone: (408) 363-4479.
What is Catherine Trinh's NPI number?
Catherine Trinh's National Provider Identifier (NPI) is 1861152746, issued on 12/20/2021.
Does Catherine Trinh prescribe more brand-name or generic drugs?
Catherine Trinh's prescribing is 12% brand-name and 88% generic drugs by claim count, with $60K in brand drug costs.
Does Catherine Trinh prescribe opioids?
Yes, Catherine Trinh had 442 opioid claims in 2023 with an opioid prescribing rate of 91.1%.
How many Pharmacist providers are there in the US?
There are 290,447 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does Catherine Trinh prescribe most often?
Based on 2023 Medicare Part D data, Catherine Trinh's most frequently prescribed drugs include Hydrocodone-Acetaminophen, Buprenorphine, Morphine Sulfate Er. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Catherine Trinh accept Medicare?
Catherine Trinh appears in CMS Medicare data with 485 Part D claims and 189 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Catherine Trinh's credentials?
Catherine Trinh's NPI is 1861152746. 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

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

Compiled from official public sources by the PlainDoctor editorial team.