2026 NPPES data Optometrist NPI 1891884771 O.D.
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MICHAEL FISHER, O.D.

Optometrist in WINDOM, Minnesota. 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
332
Medicare Part D claims · 58 beneficiaries · Optometrist avg: 257
Generic prescribing
61%
generic claims · 39% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MICHAEL FISHER, O.D. filed 332 Medicare Part D claims in 2023 as a Optometrist in WINDOM, Minnesota, prescribing 61% generic.

332
Part D claims, 2023
61%
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.

MICHAEL FISHER, O.D.'s Medicare Part D volume vs every U.S. prescriber

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

332 Top 43% higher than 57% 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

What does the federal data show about MICHAEL FISHER, O.D.?

Quality data not reported

NPI registry status

Active

Issued 10/11/2006

NPI 1891884771

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

332 29% vs specialty avg

2023 prescription claims

Specialty avg: 257

Specialty distribution in Minnesota

How Optometrist compares to other specialties among Minnesota providers

Minnesota providers

Optometrist share within Minnesota

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

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).

MICHAEL FISHER, O.D. is a Optometrist provider practicing in WINDOM, Minnesota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: O.D.. NPI: 1891884771. 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.

MICHAEL FISHER, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 230 10TH ST, WINDOM, MN, 56101, with a listed phone of (507) 831-3478. NPI 1891884771 was issued on 10/11/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what FISHER 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 332 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $16K in drug spend, split 39% brand-name and 61% 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

230 10TH ST
WINDOM, MN 56101

Provider Details

NPI 1891884771
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 10/11/2006

Brand vs generic prescribing mix · Above average

MICHAEL FISHER, O.D. — brand share 39.0%
Specialty average (est.)

39% brand-name claims vs 61% generic, on 332 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.

332
Total Claims
$16K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
430
Total Day Supply
11,075
Brand vs Generic
39% brand / 61% generic
Brand Drug Cost
$11K
Generic Drug Cost
$6K

Patient Demographics

Average Patient Age
79.5 years
Avg HCC Risk Score
1.19
Gender Split
69% female / 31% 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
141
Timolol Maleate
79
Alphagan P
Brimonidine Tartrate
14
Travoprost
14
Combigan
Brimonidine Tartrate/Timolol
13

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

Optometrist Overview

How MICHAEL FISHER, O.D. fits within the Optometrist landscape nationally.

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

MICHAEL FISHER, O.D.'s 332 claims are above the specialty average of 257.

Nearby Optometrist Providers in Minnesota

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

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

Frequently Asked Questions

What is MICHAEL FISHER, O.D.'s specialty?
MICHAEL FISHER, O.D. specializes in Optometrist and practices in WINDOM, Minnesota. Credentials: O.D..
How much does MICHAEL FISHER, O.D. prescribe under Medicare Part D?
In 2023, MICHAEL FISHER, O.D. wrote 332 Medicare Part D claims totaling $16K in drug costs for 58 beneficiaries.
Where is MICHAEL FISHER, O.D. located?
MICHAEL FISHER, O.D. is located at 230 10TH ST, WINDOM, MN, 56101. Phone: (507) 831-3478.
What is MICHAEL FISHER, O.D.'s NPI number?
MICHAEL FISHER, O.D.'s National Provider Identifier (NPI) is 1891884771, issued on 10/11/2006.
Does MICHAEL FISHER, O.D. prescribe more brand-name or generic drugs?
MICHAEL FISHER, O.D.'s prescribing is 39% brand-name and 61% generic drugs by claim count, with $11K 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 MICHAEL FISHER, O.D. prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL FISHER, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Alphagan P. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL FISHER, O.D. accept Medicare?
MICHAEL FISHER, O.D. appears in CMS Medicare data with 332 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL FISHER, O.D.'s credentials?
MICHAEL FISHER, O.D.'s NPI is 1891884771 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

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