2026 NPPES data Clinical Pharmacology Physician NPI 1851989404 PHARMACIST, PHARM.D
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AMANDA CHAU YUE, PHARMACIST, PHARM.D

Clinical Pharmacology Physician in HOCKESSIN, Delaware. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
21
Medicare Part D claims · 21 beneficiaries · Clinical Pharmacology Physician avg: 260
Generic prescribing
0%
generic claims · 100% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

AMANDA CHAU YUE, PHARMACIST, PHARM.D filed 21 Medicare Part D claims in 2023 as a Clinical Pharmacology Physician in HOCKESSIN, Delaware, prescribing 0% generic.

21
Part D claims, 2023
0%
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.

AMANDA CHAU YUE, PHARMACIST, PHARM.D's Medicare Part D volume vs every U.S. prescriber

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

21 0th percentile higher than 0% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 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. 2,000–2,200: 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

Board-eligible specialty (heuristic — not verified)

AMANDA CHAU YUE, PHARMACIST, PHARM.D practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about AMANDA CHAU YUE, PHARMACIST, PHARM.D?

Quality data not reported

NPI registry status

Active

Issued 01/08/2021

NPI 1851989404

Primary specialty

Clinical Pharmacology Physician

Rare

177 US NPIs in this specialty

Medicare Part D claims

21 92% vs specialty avg

2023 prescription claims

Specialty avg: 260

Specialty distribution in Delaware

How Clinical Pharmacology Physician compares to other specialties among Delaware providers

Delaware providers

Clinical Pharmacology Physician share within Delaware

1. Clinical Pharmacology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Clinical Pharmacology Physician share within Delaware

Specialty board-certification context

Estimated specialty board-certified rate — Clinical Pharmacology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Clinical Pharmacology Physician ABMS/AOA estimate

Est. board-certified rate (Clinical Pharmacology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Clinical Pharmacology Physician) — ABMS / AOA estimate

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).

AMANDA CHAU YUE, PHARMACIST, PHARM.D appears in the CMS NPPES registry as a Clinical Pharmacology Physician provider holding PHARMACIST, PHARM.D credentials at 6317 LIMESTONE RD, HOCKESSIN, DE, 19707, with a listed phone of (302) 234-5440. NPI 1851989404 was issued on 01/08/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAU YUE 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 21 prescription claims written by this provider, covering 21 Medicare beneficiaries and totaling roughly $5K in drug spend, split 100% brand-name and 0% generic by claim count. 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.

Clinical Pharmacology Physician is a narrow specialty nationwide, with 177 enrolled providers across 45 states and an average of 260 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

6317 LIMESTONE RD
HOCKESSIN, DE 19707

Provider Details

NPI 1851989404
Specialty Clinical Pharmacology Physician
Credentials PHARMACIST, PHARM.D
Gender Female
NPI Issued 01/08/2021

Brand vs generic prescribing mix · Brand-heavy

AMANDA CHAU YUE, PHARMACIST, PHARM.D — brand share 100.0%
Specialty average (est.)

100% brand-name claims vs 0% generic, on 21 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.

21
Total Claims
$5K
Total Drug Cost
21
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
21
Total Day Supply
21
Brand vs Generic
100% brand / 0% generic
Brand Drug Cost
$5K
Generic Drug Cost
$0

Patient Demographics

Average Patient Age
74.4 years
Avg HCC Risk Score
0.92
Age Distribution
<65: 0, 65-74: 12, 75-84: N/A, 85+: N/A

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
12

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

Clinical Pharmacology Physician Overview

How AMANDA CHAU YUE, PHARMACIST, PHARM.D fits within the Clinical Pharmacology Physician landscape nationally.

177
Clinical Pharmacology Physician Providers in US
45
States with Clinical Pharmacology Physician
260
Avg Claims per Provider

AMANDA CHAU YUE, PHARMACIST, PHARM.D's 21 claims are below the specialty average of 260.

Frequently Asked Questions

What is AMANDA CHAU YUE, PHARMACIST, PHARM.D's specialty?
AMANDA CHAU YUE, PHARMACIST, PHARM.D specializes in Clinical Pharmacology Physician and practices in HOCKESSIN, Delaware. Credentials: PHARMACIST, PHARM.D.
How much does AMANDA CHAU YUE, PHARMACIST, PHARM.D prescribe under Medicare Part D?
In 2023, AMANDA CHAU YUE, PHARMACIST, PHARM.D wrote 21 Medicare Part D claims totaling $5K in drug costs for 21 beneficiaries.
Where is AMANDA CHAU YUE, PHARMACIST, PHARM.D located?
AMANDA CHAU YUE, PHARMACIST, PHARM.D is located at 6317 LIMESTONE RD, HOCKESSIN, DE, 19707. Phone: (302) 234-5440.
What is AMANDA CHAU YUE, PHARMACIST, PHARM.D's NPI number?
AMANDA CHAU YUE, PHARMACIST, PHARM.D's National Provider Identifier (NPI) is 1851989404, issued on 01/08/2021.
Does AMANDA CHAU YUE, PHARMACIST, PHARM.D prescribe more brand-name or generic drugs?
AMANDA CHAU YUE, PHARMACIST, PHARM.D's prescribing is 100% brand-name and 0% generic drugs by claim count, with $5K in brand drug costs.
How many Clinical Pharmacology Physician providers are there in the US?
There are 177 Clinical Pharmacology Physician providers across 45 states in the US. The average Clinical Pharmacology Physician provider writes 260 Medicare Part D claims per year.
What drugs does AMANDA CHAU YUE, PHARMACIST, PHARM.D prescribe most often?
Based on 2023 Medicare Part D data, AMANDA CHAU YUE, PHARMACIST, PHARM.D's most frequently prescribed drugs include Shingrix. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMANDA CHAU YUE, PHARMACIST, PHARM.D accept Medicare?
AMANDA CHAU YUE, PHARMACIST, PHARM.D appears in CMS Medicare data with 21 Part D claims and 21 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMANDA CHAU YUE, PHARMACIST, PHARM.D's credentials?
AMANDA CHAU YUE, PHARMACIST, PHARM.D's NPI is 1851989404 with credentials PHARMACIST, PHARM.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

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