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2026 NPPES data Optometrist NPI 1174693246 O.D.
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Robert Mertz, O.D.

Optometrist in Fitchburg, Wisconsin.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
124
Medicare Part D claims · 32 beneficiaries · Optometrist avg: 279
Generic prescribing
47%
generic claims · 53% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.2/100
▼ 3 pts below national avg 83.5 · Above neutral
Industry payments
$101.32
1 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Robert Mertz, O.D. reported a CMS MIPS final score of 80.2/100 - below the 83.5 national average - and filed 124 Medicare Part D claims in 2024.

80.2/100
MIPS score · -3 vs avg
124
Part D claims, 2024
47%
generic prescribing
$101.32
industry payments (Sunshine Act)

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.

Federal trust snapshot

What official records show about Robert Mertz, O.D.

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1174693246), first enumerated 11/08/2006.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 124 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 80.2/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Industry payment transparency

    $101.32 in reported industry payments (1 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.

    Source: CMS Open Payments

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1174693246 · Optometrist

NPI-10 · ENUM-LEGACY · TAX-MEGA · MIPS-BELOW · RX-LIGHT · BOOK-LIGHT · PHOTO-FINISH

  • NPI-10 1174693246
  • ENUM-LEGACY 2006
  • TAX-MEGA 61K Optometrist
  • MIPS-BELOW 80.2/100
  • RX-LIGHT 124
  • BOOK-LIGHT 1,142 in Wisconsin
  • PHOTO-FINISH Douglas Wallin, OD · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Robert Mertz, O.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

80 ≥ 30th percentile 30% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Robert Mertz, O.D. sits

This provider among optometrist peers

Across the 6,187 optometrist providers who report both Medicare Part D prescribing and a MIPS quality score, Robert Mertz, O.D. writes more Part D claims than 22% of them and scores higher on MIPS quality than 33% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.448.873.297.7Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 0Robert Mertz, O.D., Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 33
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one optometrist peer from a representative sample of 60; the gold marker is Robert Mertz, O.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Robert Mertz, O.D.?

Near national average

NPI registry status

Active

Issued 11/08/2006

NPI 1174693246

Primary specialty

Optometrist

High-volume

61,426 US NPIs in this specialty

Medicare Part D claims

124 56% vs specialty avg

2024 prescription claims

Specialty avg: 279

MIPS final score

80.2/100 3.3 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Wisconsin

How Optometrist compares to other specialties among Wisconsin providers

Wisconsin providers
Physical Therapist5.5%Registered Nurse4.7%Pharmacist4.6%Student in an Organized Heal…3.4%Professional Counselor3.3%Speech-Language Pathologist3.2%Optometrist1%
Largest specialties in Wisconsin (% of in-state providers)

Medicare quality performance, MIPS

Robert Mertz, O.D.'s 2023 MIPS final score plotted against the Optometrist national average

Near national average
MIPS Final Score
80.2/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%80.2%
MIPS final score (Optometrist) - 80.2/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

3051 CAHILL MAIN
Fitchburg, WI 53711
(608) 661-7200

Provider Details

NPI 1174693246
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 11/08/2006

CMS Quality Score (MIPS)

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

80.2217
Final Score
Measured-score avg: 83.5
85.0677
Quality
49.8379
Cost
99
Promoting Interoperability

Reporting: Group practice

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 Robert Mertz, O.D.. Source: openpaymentsdata.cms.gov.

Total received

$101

Largest payer

Alcon Vision LLC

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 · Brand-heavy

Robert Mertz, O.D. - brand share 53.0%
Optometrist average

53% brand-name claims vs 47% generic, on 124 2024 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 2024.

124
Total Claims
$14K
Total Drug Cost
32
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
187.767
Total Day Supply
5,202
Brand vs Generic
53% brand / 47% generic
Brand Drug Cost
$13K
Generic Drug Cost
$851

Patient Demographics

Average Patient Age
74.2 years
Avg HCC Risk Score
0.73
Gender Split
47% female / 53% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

Drug Claims
Latanoprost
 67
Rocklatan
Netarsudil Mesylat/Latanoprost
11

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

More Optometrist in WI → All providers in Wisconsin → Compare specialties →

Optometrist Overview

How Robert Mertz, O.D. fits within the Optometrist landscape nationally.

61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider

Robert Mertz, O.D.'s 124 claims are below the specialty average of 279.

Nationwide Optometrist peers with similar MIPS or enrollment year

Two federal-record peer sets for Mertz, both outside Wisconsin so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (80.2 here).

Katherine Fleecs 80.2 NE Shawn Doty 80.2 NC Todd Sholey 80.2 WY Douglas Wallin 80.2 SD

Same NPPES enumeration year (2006)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Martin Losito Auburn, NY Reid Mlsna Rochelle, IL Kara Bachus Lake Mary, FL Kimberly Hoyt Ashland, OR

Nearby Optometrist Providers in Wisconsin

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

One of 1,142 Optometrist providers enrolled in Wisconsin, 5 are shown here.

Dr. Katie Abata
O.D.
Appleton, WI
Dr. Brianna Adams
OD
Stoughton, WI
Dr. Gerald Adams
OD
Westby, WI
James Adams
Portage, WI
Dr. Lawrence Addison
O.D.
Weston, WI

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

Frequently Asked Questions

What is Robert Mertz, O.D.'s specialty? ▼
Robert Mertz, O.D. specializes in Optometrist and practices in Fitchburg, Wisconsin. Credentials: O.D..
How much does Robert Mertz, O.D. prescribe under Medicare Part D? ▼
In 2024, Robert Mertz, O.D. wrote 124 Medicare Part D claims totaling $14K in drug costs for 32 beneficiaries.
What is Robert Mertz, O.D.'s Medicare quality score? ▼
Robert Mertz, O.D. has a CMS MIPS Final Score of 80.2/100 (Quality: 85.1, Cost: 49.8). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Robert Mertz, O.D. located? ▼
Robert Mertz, O.D. is located at 3051 CAHILL MAIN, Fitchburg, WI, 53711. Phone: (608) 661-7200.
What is Robert Mertz, O.D.'s NPI number? ▼
Robert Mertz, O.D.'s National Provider Identifier (NPI) is 1174693246, issued on 11/08/2006.
Does Robert Mertz, O.D. prescribe more brand-name or generic drugs? ▼
Robert Mertz, O.D.'s prescribing is 53% brand-name and 47% generic drugs by claim count, with $13K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Robert Mertz, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Robert Mertz, O.D.'s most frequently prescribed drugs include Latanoprost, Rocklatan. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Robert Mertz, O.D. accept Medicare? ▼
Robert Mertz, O.D. appears in CMS Medicare data with 124 Part D claims and 32 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Robert Mertz, O.D.'s credentials? ▼
Robert Mertz, O.D.'s NPI is 1174693246 with credentials O.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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.