NPI registry status
Active
2026 NPPES data Pharmacist NPI 1851875603
Verify on CMS → Thuy Ngan Vo
Pharmacist in Tolleson, Arizona.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 291,043 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
71
Medicare Part D claims · 68 beneficiaries · Pharmacist avg: 135
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Thuy Ngan Vo filed 71 Medicare Part D claims in 2023 as a Pharmacist in Tolleson, Arizona, prescribing 0% generic.
- 71
- Part D claims, 2023
- 0%
- generic prescribing
- ≥0th
- 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 1851875603 · Pharmacist
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-TRACE · BOOK-MID · PHOTO-ENUM
- NPI-10 1851875603
- ENUM-RECENT 2018
- TAX-MEGA 291K Pharmacist
- RX-TRACE 71
- BOOK-MID 6,898 in Arizona
- PHOTO-ENUM Brian Campbell · 2018
Thuy Ngan Vo's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
71 ≥ 0th percentile 0% 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 Thuy Ngan Vo?
Quality data not reportedPrimary specialty
Pharmacist
Medicare Part D claims
71 47% vs specialty avg
Specialty distribution in Arizona
How Pharmacist compares to other specialties among Arizona 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:
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 | 1851875603 |
|---|---|
| Specialty | Pharmacist |
| Gender | Female |
| NPI Issued | 09/18/2018 |
Brand vs generic prescribing mix · Brand-heavy
Thuy Ngan Vo - brand share 100.0%
Pharmacist average
100% brand-name claims vs 0% generic, on 71 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.
71
Total Claims
$21K
Total Drug Cost
68
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 71
- Total Day Supply
- 100
- Brand vs Generic
- 100% brand / 0% generic
- Brand Drug Cost
- $21K
- Generic Drug Cost
- $0
Patient Demographics
- Average Patient Age
- 73.8 years
- Avg HCC Risk Score
- 0.85
- Gender Split
- 51% female / 49% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Shingrix Varicella-Zoster Ge/As01b/Pf | 19 |
| Abrysvo "Rsv Vacc | N/A |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pharmacist Overview
How Thuy Ngan Vo fits within the Pharmacist landscape nationally.
291,043
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider
Thuy Ngan Vo's 71 claims are below the specialty average of 135.
Nationwide Pharmacist peers with similar MIPS or enrollment year
Two federal-record peer sets for Vo, both outside Arizona so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2018)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pharmacist Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Vo.
One of 6,898 Pharmacist providers enrolled in Arizona, 5 are shown here.
Dr. Rooney Aago
RPH
Phoenix, AZ
Maria Rosalie Abad
Lake Havasu City, AZ
Jesse Abah
Phoenix, AZ
Dr. Dustin Abaonza
PHARM D
Tuba City, AZ
Kristin Abaonza
Tuba City, AZ
Compare Pharmacist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Thuy Ngan Vo's specialty? ▼
Thuy Ngan Vo specializes in Pharmacist and practices in Tolleson, Arizona.
How much does Thuy Ngan Vo prescribe under Medicare Part D? ▼
In 2023, Thuy Ngan Vo wrote 71 Medicare Part D claims totaling $21K in drug costs for 68 beneficiaries.
Where is Thuy Ngan Vo located? ▼
Thuy Ngan Vo is located at 500 S 99TH AVE, Tolleson, AZ, 85353. Phone: (480) 705-4926.
What is Thuy Ngan Vo's NPI number? ▼
Thuy Ngan Vo's National Provider Identifier (NPI) is 1851875603, issued on 09/18/2018.
Does Thuy Ngan Vo prescribe more brand-name or generic drugs? ▼
Thuy Ngan Vo's prescribing is 100% brand-name and 0% generic drugs by claim count, with $21K in brand drug costs.
How many Pharmacist providers are there in the US? ▼
There are 291,043 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does Thuy Ngan Vo prescribe most often? ▼
Based on 2023 Medicare Part D data, Thuy Ngan Vo's most frequently prescribed drugs include Shingrix, Abrysvo. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thuy Ngan Vo accept Medicare? ▼
Thuy Ngan Vo appears in CMS Medicare data with 71 Part D claims and 68 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thuy Ngan Vo's credentials? ▼
Thuy Ngan Vo's NPI is 1851875603. 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.