2026 NPPES data Ophthalmology Physician NPI 1043690233 M.D.
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ANTHONY PARENDO, M.D.

Ophthalmology Physician in APPLETON, Wisconsin. 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
249
Medicare Part D claims · 88 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
57%
generic claims · 43% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ANTHONY PARENDO, M.D. filed 249 Medicare Part D claims in 2023 as a Ophthalmology Physician in APPLETON, Wisconsin, prescribing 57% generic.

249
Part D claims, 2023
57%
generic prescribing
Likely
board-certified (heuristic)

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.

ANTHONY PARENDO, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

249 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 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 certification likely (heuristic — not verified)

ANTHONY PARENDO, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about ANTHONY PARENDO, M.D.?

Quality data not reported

NPI registry status

Active

Issued 06/03/2015

NPI 1043690233

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

249 82% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Wisconsin

How Ophthalmology Physician compares to other specialties among Wisconsin providers

Wisconsin providers

Ophthalmology Physician share within Wisconsin

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Wisconsin

Specialty board-certification context

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

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

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

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

ANTHONY PARENDO, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 442 N WESTHILL BLVD STE A, APPLETON, WI, 54914, with a listed phone of (920) 751-8666. NPI 1043690233 was issued on 06/03/2015. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARENDO 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 249 prescription claims written by this provider, covering 88 Medicare beneficiaries and totaling roughly $14K in drug spend, split 43% brand-name and 57% 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

442 N WESTHILL BLVD STE A
APPLETON, WI 54914

Provider Details

NPI 1043690233
Specialty Ophthalmology Physician
Credentials M.D.
Gender Male
NPI Issued 06/03/2015

Hospital and facility affiliations

Facilities where ANTHONY PARENDO, M.D. 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.

NORTHEAST WISCONSIN RETINA ASSOCIATES SC
OSHKOSH, WI

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Above average

ANTHONY PARENDO, M.D. — brand share 43.0%
Specialty average (est.)

43% brand-name claims vs 57% generic, on 249 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.

249
Total Claims
$14K
Total Drug Cost
88
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
399
Total Day Supply
11,245
Brand vs Generic
43% brand / 57% generic
Brand Drug Cost
$10K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.23
Gender Split
48% female / 52% male

Top Prescribed Drugs (Medicare Part D)

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

What ANTHONY PARENDO, M.D. 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
Prednisolone Acetate
76
Ketorolac Tromethamine
74
Brimonidine Tartrate
17
Erythromycin
Erythromycin Base
11

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

Ophthalmology Physician Overview

How ANTHONY PARENDO, M.D. fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

ANTHONY PARENDO, M.D.'s 249 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Wisconsin

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

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ANTHONY PARENDO, M.D.'s specialty?
ANTHONY PARENDO, M.D. specializes in Ophthalmology Physician and practices in APPLETON, Wisconsin. Credentials: M.D..
How much does ANTHONY PARENDO, M.D. prescribe under Medicare Part D?
In 2023, ANTHONY PARENDO, M.D. wrote 249 Medicare Part D claims totaling $14K in drug costs for 88 beneficiaries.
Where is ANTHONY PARENDO, M.D. located?
ANTHONY PARENDO, M.D. is located at 442 N WESTHILL BLVD STE A, APPLETON, WI, 54914. Phone: (920) 751-8666.
What is ANTHONY PARENDO, M.D.'s NPI number?
ANTHONY PARENDO, M.D.'s National Provider Identifier (NPI) is 1043690233, issued on 06/03/2015.
Does ANTHONY PARENDO, M.D. prescribe more brand-name or generic drugs?
ANTHONY PARENDO, M.D.'s prescribing is 43% brand-name and 57% generic drugs by claim count, with $10K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does ANTHONY PARENDO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ANTHONY PARENDO, M.D.'s most frequently prescribed drugs include Prednisolone Acetate, Ketorolac Tromethamine, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ANTHONY PARENDO, M.D. accept Medicare?
ANTHONY PARENDO, M.D. appears in CMS Medicare data with 249 Part D claims and 88 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ANTHONY PARENDO, M.D.'s credentials?
ANTHONY PARENDO, M.D.'s NPI is 1043690233 with credentials M.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