2026 NPPES data Optometrist NPI 1104488634 OD
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ALEX QUACH, OD

Optometrist in WILMINGTON, 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
784
Medicare Part D claims · 240 beneficiaries · Optometrist avg: 257
Generic prescribing
64%
generic claims · 36% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$546.5
12 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: ALEX QUACH, OD is a Optometrist ([object Object]) practicing in WILMINGTON, Delaware with a Medicare Part D prescribing footprint of 784 claims across 240 beneficiaries — 36% brand-name prescribing . Industry payments of $546.5 across 12 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: ALEX QUACH, OD filed 784 Medicare Part D claims in 2023 across WILMINGTON, Delaware. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

ALEX QUACH, OD at a glance

Quality data not reported

NPI registry status

Active

Issued 07/04/2019

NPI 1104488634

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

784 205% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Delaware

How Optometrist compares to other specialties among Delaware providers

Delaware providers

Optometrist share within Delaware

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within Delaware

Specialty board-certification context

Estimated specialty board-certified rate — Optometrist (ABMS / AOA reference)

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

Est. board-certified rate (Optometrist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Optometrist) — 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).

ALEX QUACH, OD is a Optometrist provider practicing in WILMINGTON, Delaware, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: OD. NPI: 1104488634. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

ALEX QUACH, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 3509 SILVERSIDE RD, WILMINGTON, DE, 19810, with a listed phone of (302) 479-3937. NPI 1104488634 was issued on 07/04/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what QUACH 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 784 prescription claims written by this provider, covering 240 Medicare beneficiaries and totaling roughly $80K in drug spend, split 36% brand-name and 64% 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.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 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

3509 SILVERSIDE RD
WILMINGTON, DE 19810

Provider Details

NPI 1104488634
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 07/04/2019

Hospital and facility affiliations

Facilities where ALEX QUACH, OD 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.

DELAWARE OPHTHALMOLOGY CONSULTANTS PA
WILMINGTON, DE

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 ALEX QUACH, OD. Source: openpaymentsdata.cms.gov.

Total received

$547

Largest payer

Tarsus 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.

Brand vs generic prescribing mix · Above average

ALEX QUACH, OD — brand share 36.0%
Specialty average (est.)

36% brand-name claims vs 64% generic, on 784 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.

784
Total Claims
$80K
Total Drug Cost
240
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,506
Total Day Supply
42,548
Brand vs Generic
36% brand / 64% generic
Brand Drug Cost
$67K
Generic Drug Cost
$14K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.07
Gender Split
54% female / 46% 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
Latanoprost
265
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
95
Dorzolamide Hcl
60
Brimonidine Tartrate
52
Timolol Maleate
44
Erythromycin
Erythromycin Base
41
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
33
Rhopressa
Netarsudil Mesylate
28
Simbrinza
Brinzolamide/Brimonidine Tart
20
Lumigan
Bimatoprost
18

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

Optometrist Overview

How ALEX QUACH, OD fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

ALEX QUACH, OD's 784 claims are above the specialty average of 257.

Nearby Optometrist Providers in Delaware

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

Compare Optometrist nationally: see state-by-state distribution →

Frequently Asked Questions

What is ALEX QUACH, OD's specialty?
ALEX QUACH, OD specializes in Optometrist and practices in WILMINGTON, Delaware. Credentials: OD.
How much does ALEX QUACH, OD prescribe under Medicare Part D?
In 2023, ALEX QUACH, OD wrote 784 Medicare Part D claims totaling $80K in drug costs for 240 beneficiaries.
Where is ALEX QUACH, OD located?
ALEX QUACH, OD is located at 3509 SILVERSIDE RD, WILMINGTON, DE, 19810. Phone: (302) 479-3937.
What is ALEX QUACH, OD's NPI number?
ALEX QUACH, OD's National Provider Identifier (NPI) is 1104488634, issued on 07/04/2019.
Does ALEX QUACH, OD prescribe more brand-name or generic drugs?
ALEX QUACH, OD's prescribing is 36% brand-name and 64% generic drugs by claim count, with $67K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does ALEX QUACH, OD prescribe most often?
Based on 2023 Medicare Part D data, ALEX QUACH, OD's most frequently prescribed drugs include Latanoprost, Dorzolamide-Timolol, Dorzolamide Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ALEX QUACH, OD accept Medicare?
ALEX QUACH, OD appears in CMS Medicare data with 784 Part D claims and 240 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ALEX QUACH, OD's credentials?
ALEX QUACH, OD's NPI is 1104488634 with credentials OD. 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