2026 NPPES data Ophthalmology Physician NPI 1780047605 M.D.
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ASHLEY NEIWEEM, M.D.

Ophthalmology Physician in MADISON, 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
1K
Medicare Part D claims · 383 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
66%
generic claims · 34% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

ASHLEY NEIWEEM, M.D. filed 1,406 Medicare Part D claims in 2023 as a Ophthalmology Physician in MADISON, Wisconsin, prescribing 66% generic.

1K
Part D claims, 2023
66%
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.

ASHLEY NEIWEEM, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

1,406 Top 20% higher than 80% 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%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). This entry sits in this band. 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)

ASHLEY NEIWEEM, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 ASHLEY NEIWEEM, M.D.?

Quality data not reported

NPI registry status

Active

Issued 03/29/2016

NPI 1780047605

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,406 1% 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).

ASHLEY NEIWEEM, M.D. appears in the CMS NPPES registry as a Ophthalmology Physician provider holding M.D. credentials at 1821 S STOUGHTON RD, MADISON, WI, 53716, with a listed phone of (608) 260-6000. NPI 1780047605 was issued on 03/29/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NEIWEEM 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 1,406 prescription claims written by this provider, covering 383 Medicare beneficiaries and totaling roughly $78K in drug spend, split 34% brand-name and 66% 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

1821 S STOUGHTON RD
MADISON, WI 53716

Provider Details

NPI 1780047605
Specialty Ophthalmology Physician
Credentials M.D.
Gender Female
NPI Issued 03/29/2016

Hospital and facility affiliations

Facilities where ASHLEY NEIWEEM, 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.

DEAN HEALTH SYSTEMS INC
MADISON, WI
KENTUCKY EYE CARE PSC
LOUISVILLE, KY

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

ASHLEY NEIWEEM, M.D. — brand share 34.0%
Specialty average (est.)

34% brand-name claims vs 66% generic, on 1,406 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.

1,406
Total Claims
$78K
Total Drug Cost
383
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,932
Total Day Supply
48,212
Brand vs Generic
34% brand / 66% generic
Brand Drug Cost
$52K
Generic Drug Cost
$26K

Patient Demographics

Average Patient Age
75.7 years
Avg HCC Risk Score
1.12
Gender Split
63% female / 37% male
Age Distribution
<65: 14, 65-74: 168, 75-84: 151, 85+: 50

Top Prescribed Drugs (Medicare Part D)

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

What ASHLEY NEIWEEM, 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
Moxifloxacin
Moxifloxacin Hcl
348
Prednisolone Acetate
325
Ketorolac Tromethamine
194
Latanoprost
166
Timolol Maleate
77
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
67
Brimonidine Tartrate
58
Travoprost
26
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
22
Lumigan
Bimatoprost
16

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

Ophthalmology Physician Overview

How ASHLEY NEIWEEM, 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

ASHLEY NEIWEEM, M.D.'s 1,406 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 NEIWEEM.

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

Frequently Asked Questions

What is ASHLEY NEIWEEM, M.D.'s specialty?
ASHLEY NEIWEEM, M.D. specializes in Ophthalmology Physician and practices in MADISON, Wisconsin. Credentials: M.D..
How much does ASHLEY NEIWEEM, M.D. prescribe under Medicare Part D?
In 2023, ASHLEY NEIWEEM, M.D. wrote 1,406 Medicare Part D claims totaling $78K in drug costs for 383 beneficiaries.
Where is ASHLEY NEIWEEM, M.D. located?
ASHLEY NEIWEEM, M.D. is located at 1821 S STOUGHTON RD, MADISON, WI, 53716. Phone: (608) 260-6000.
What is ASHLEY NEIWEEM, M.D.'s NPI number?
ASHLEY NEIWEEM, M.D.'s National Provider Identifier (NPI) is 1780047605, issued on 03/29/2016.
Does ASHLEY NEIWEEM, M.D. prescribe more brand-name or generic drugs?
ASHLEY NEIWEEM, M.D.'s prescribing is 34% brand-name and 66% generic drugs by claim count, with $52K 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 ASHLEY NEIWEEM, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ASHLEY NEIWEEM, M.D.'s most frequently prescribed drugs include Moxifloxacin, Prednisolone Acetate, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ASHLEY NEIWEEM, M.D. accept Medicare?
ASHLEY NEIWEEM, M.D. appears in CMS Medicare data with 1,406 Part D claims and 383 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ASHLEY NEIWEEM, M.D.'s credentials?
ASHLEY NEIWEEM, M.D.'s NPI is 1780047605 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