2026 NPPES data Optometrist NPI 1790064947 OD
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NATHAN SCHLOTTHAUER, OD

Optometrist in JANESVILLE, 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
412
Medicare Part D claims · 115 beneficiaries · Optometrist avg: 257
Generic prescribing
70%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

NATHAN SCHLOTTHAUER, OD filed 412 Medicare Part D claims in 2023 as a Optometrist in JANESVILLE, Wisconsin, prescribing 70% generic.

412
Part D claims, 2023
70%
generic prescribing

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.

NATHAN SCHLOTTHAUER, OD's Medicare Part D volume vs every U.S. prescriber

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

412 Top 38% higher than 62% 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%). This entry sits in this band. 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

What does the federal data show about NATHAN SCHLOTTHAUER, OD?

Quality data not reported

NPI registry status

Active

Issued 08/05/2011

NPI 1790064947

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

412 60% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Wisconsin

How Optometrist compares to other specialties among Wisconsin providers

Wisconsin providers

Optometrist share within Wisconsin

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

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).

NATHAN SCHLOTTHAUER, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 3200 E RACINE ST, JANESVILLE, WI, 53546, with a listed phone of (608) 371-8000. NPI 1790064947 was issued on 08/05/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SCHLOTTHAUER 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 412 prescription claims written by this provider, covering 115 Medicare beneficiaries and totaling roughly $30K in drug spend, split 30% brand-name and 70% 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

3200 E RACINE ST
JANESVILLE, WI 53546

Provider Details

NPI 1790064947
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 08/05/2011

Hospital and facility affiliations

Facilities where NATHAN SCHLOTTHAUER, 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.

DEAN HEALTH SYSTEMS INC
JANESVILLE, 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

NATHAN SCHLOTTHAUER, OD — brand share 30.0%
Specialty average (est.)

30% brand-name claims vs 70% generic, on 412 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.

412
Total Claims
$30K
Total Drug Cost
115
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
818
Total Day Supply
23,521
Brand vs Generic
30% brand / 70% generic
Brand Drug Cost
$18K
Generic Drug Cost
$11K

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
1.32
Gender Split
63% female / 37% male

Top Prescribed Drugs (Medicare Part D)

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

What NATHAN SCHLOTTHAUER, OD 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
Latanoprost
207
Timolol Maleate
38
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
33
Brimonidine Tartrate
25
Dorzolamide Hcl
19
Travoprost
19
Neomycin-Polymyxin-Dexameth
Neomycin/Polymyxin B/Dexametha
14
Lumigan
Bimatoprost
12
Fluorometholone
11

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

Optometrist Overview

How NATHAN SCHLOTTHAUER, OD fits within the Optometrist landscape nationally.

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

NATHAN SCHLOTTHAUER, OD's 412 claims are above the specialty average of 257.

Nearby Optometrist Providers in Wisconsin

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

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

Frequently Asked Questions

What is NATHAN SCHLOTTHAUER, OD's specialty?
NATHAN SCHLOTTHAUER, OD specializes in Optometrist and practices in JANESVILLE, Wisconsin. Credentials: OD.
How much does NATHAN SCHLOTTHAUER, OD prescribe under Medicare Part D?
In 2023, NATHAN SCHLOTTHAUER, OD wrote 412 Medicare Part D claims totaling $30K in drug costs for 115 beneficiaries.
Where is NATHAN SCHLOTTHAUER, OD located?
NATHAN SCHLOTTHAUER, OD is located at 3200 E RACINE ST, JANESVILLE, WI, 53546. Phone: (608) 371-8000.
What is NATHAN SCHLOTTHAUER, OD's NPI number?
NATHAN SCHLOTTHAUER, OD's National Provider Identifier (NPI) is 1790064947, issued on 08/05/2011.
Does NATHAN SCHLOTTHAUER, OD prescribe more brand-name or generic drugs?
NATHAN SCHLOTTHAUER, OD's prescribing is 30% brand-name and 70% generic drugs by claim count, with $18K 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 NATHAN SCHLOTTHAUER, OD prescribe most often?
Based on 2023 Medicare Part D data, NATHAN SCHLOTTHAUER, OD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NATHAN SCHLOTTHAUER, OD accept Medicare?
NATHAN SCHLOTTHAUER, OD appears in CMS Medicare data with 412 Part D claims and 115 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NATHAN SCHLOTTHAUER, OD's credentials?
NATHAN SCHLOTTHAUER, OD's NPI is 1790064947 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