2026 NPPES data Ophthalmology Physician NPI 1376530568 DO
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MARK BROWER, DO

Ophthalmology Physician in ELKHORN, 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 · 282 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
70.6028/100
▼ 12 pts below national avg 83.1 · [object Object]
Industry payments
$54.24
2 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: MARK BROWER, DO is a Ophthalmology Physician ([object Object]) practicing in ELKHORN, Wisconsin with a Medicare Part D prescribing footprint of 1K claims across 282 beneficiaries — 24% brand-name prescribing . Their CMS MIPS Final Score of 70.6028/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $54.24 across 2 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: MARK BROWER, DO reported a CMS MIPS final score of 70.6028 out of 100, below the 83.1 national average, and filed 1,038 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

MARK BROWER, DO practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

MARK BROWER, DO at a glance

Below national average

NPI registry status

Active

Issued 10/03/2005

NPI 1376530568

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

1,038 27% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

MIPS final score

70.6028/100 12.497199999999992% pts

Mid-tier band

vs 83.1 national avg

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

Medicare quality performance — MIPS

MARK BROWER, DO's 2023 MIPS final score plotted against the Ophthalmology Physician national average

Below national average
MIPS Final Score
70.6028/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Ophthalmology Physician) — 70.6028/100 vs national avg 83.1

0%100%National avg83%70.6%
MIPS final score (Ophthalmology Physician) — 70.6028/100 vs national avg 83.1

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).

MARK BROWER, DO is a Ophthalmology Physician provider practicing in ELKHORN, Wisconsin, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: DO. NPI: 1376530568. 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.

MARK BROWER, DO appears in the CMS NPPES registry as a Ophthalmology Physician provider holding DO credentials at 1311 S LINCOLN ST, ELKHORN, WI, 53121, with a listed phone of (262) 723-4600. NPI 1376530568 was issued on 10/03/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BROWER 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 1,038 prescription claims written by this provider, covering 282 Medicare beneficiaries and totaling roughly $67K in drug spend, split 24% brand-name and 76% 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 70.6028/100 for the 2023 performance year (Quality 67.9307, Cost 34.912), compared with the national average of 83.1.

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

1311 S LINCOLN ST
ELKHORN, WI 53121

Provider Details

NPI 1376530568
Specialty Ophthalmology Physician
Credentials DO
Gender Male
NPI Issued 10/03/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

70.6028
Final Score
Avg: 83.1
67.9307
Quality
34.912
Cost
99
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where MARK BROWER, DO 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.

EYE PHYSICIANS AND SURGEONS SC
ELKHORN, 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).

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 MARK BROWER, DO. Source: openpaymentsdata.cms.gov.

Total received

$54

Largest payer

Oyster Point Pharma, 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 · Typical

MARK BROWER, DO — brand share 24.0%
Specialty average (est.)

24% brand-name claims vs 76% generic, on 1,038 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.

1,038
Total Claims
$67K
Total Drug Cost
282
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,898
Total Day Supply
53,164
Brand vs Generic
24% brand / 76% generic
Brand Drug Cost
$40K
Generic Drug Cost
$27K

Patient Demographics

Average Patient Age
78.4 years
Avg HCC Risk Score
1.14
Gender Split
58% female / 42% 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
387
Timolol Maleate
175
Erythromycin
Erythromycin Base
78
Brimonidine Tartrate
48
Ciprofloxacin Hcl
48
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
43
Ketorolac Tromethamine
35
Dorzolamide Hcl
32
Lumigan
Bimatoprost
25
Prednisolone Acetate
25

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

Ophthalmology Physician Overview

How MARK BROWER, DO 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

MARK BROWER, DO's 1,038 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 BROWER.

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

Frequently Asked Questions

What is MARK BROWER, DO's specialty?
MARK BROWER, DO specializes in Ophthalmology Physician and practices in ELKHORN, Wisconsin. Credentials: DO.
How much does MARK BROWER, DO prescribe under Medicare Part D?
In 2023, MARK BROWER, DO wrote 1,038 Medicare Part D claims totaling $67K in drug costs for 282 beneficiaries.
What is MARK BROWER, DO's Medicare quality score?
MARK BROWER, DO has a CMS MIPS Final Score of 70.6028/100 (Quality: 67.9307, Cost: 34.912). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MARK BROWER, DO located?
MARK BROWER, DO is located at 1311 S LINCOLN ST, ELKHORN, WI, 53121. Phone: (262) 723-4600.
What is MARK BROWER, DO's NPI number?
MARK BROWER, DO's National Provider Identifier (NPI) is 1376530568, issued on 10/03/2005.
Does MARK BROWER, DO prescribe more brand-name or generic drugs?
MARK BROWER, DO's prescribing is 24% brand-name and 76% generic drugs by claim count, with $40K 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 MARK BROWER, DO prescribe most often?
Based on 2023 Medicare Part D data, MARK BROWER, DO's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Erythromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MARK BROWER, DO accept Medicare?
MARK BROWER, DO appears in CMS Medicare data with 1,038 Part D claims and 282 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARK BROWER, DO's credentials?
MARK BROWER, DO's NPI is 1376530568 with credentials DO. 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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