2026 NPPES data Optometrist NPI 1801849633 OD
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DAVID MAY, OD

Optometrist in WAUNAKEE, 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
197
Medicare Part D claims · 47 beneficiaries · Optometrist avg: 257
Generic prescribing
53%
generic claims · 47% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$934.1
13 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DAVID MAY, OD filed 197 Medicare Part D claims in 2023 as a Optometrist in WAUNAKEE, Wisconsin, prescribing 53% generic.

197
Part D claims, 2023
53%
generic prescribing
$934.1
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.

DAVID MAY, OD's Medicare Part D volume vs every U.S. prescriber

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

197 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 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 DAVID MAY, OD?

Quality data not reported

NPI registry status

Active

Issued 05/19/2006

NPI 1801849633

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

197 23% 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).

DAVID MAY, OD appears in the CMS NPPES registry as a Optometrist provider holding OD credentials at 330 N CENTURY AVE, WAUNAKEE, WI, 53597, with a listed phone of (608) 849-3937. NPI 1801849633 was issued on 05/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MAY 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 197 prescription claims written by this provider, covering 47 Medicare beneficiaries and totaling roughly $17K in drug spend, split 47% brand-name and 53% 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

330 N CENTURY AVE
WAUNAKEE, WI 53597

Provider Details

NPI 1801849633
Specialty Optometrist
Credentials OD
Gender Male
NPI Issued 05/19/2006

Hospital and facility affiliations

Facilities where DAVID MAY, 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.

MAY VISION CENTER LLC
WAUNAKEE, 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 DAVID MAY, OD. Source: openpaymentsdata.cms.gov.

Total received

$934

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 · Above average

DAVID MAY, OD — brand share 47.0%
Specialty average (est.)

47% brand-name claims vs 53% generic, on 197 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.

197
Total Claims
$17K
Total Drug Cost
47
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
423
Total Day Supply
12,381
Brand vs Generic
47% brand / 53% generic
Brand Drug Cost
$15K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
0.59
Gender Split
51% female / 49% male

Top Prescribed Drugs (Medicare Part D)

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

What DAVID MAY, 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
98
Timolol Maleate
41
Brimonidine Tartrate
23

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

Optometrist Overview

How DAVID MAY, OD fits within the Optometrist landscape nationally.

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

DAVID MAY, OD's 197 claims are below 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 MAY.

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

Frequently Asked Questions

What is DAVID MAY, OD's specialty?
DAVID MAY, OD specializes in Optometrist and practices in WAUNAKEE, Wisconsin. Credentials: OD.
How much does DAVID MAY, OD prescribe under Medicare Part D?
In 2023, DAVID MAY, OD wrote 197 Medicare Part D claims totaling $17K in drug costs for 47 beneficiaries.
Where is DAVID MAY, OD located?
DAVID MAY, OD is located at 330 N CENTURY AVE, WAUNAKEE, WI, 53597. Phone: (608) 849-3937.
What is DAVID MAY, OD's NPI number?
DAVID MAY, OD's National Provider Identifier (NPI) is 1801849633, issued on 05/19/2006.
Does DAVID MAY, OD prescribe more brand-name or generic drugs?
DAVID MAY, OD's prescribing is 47% brand-name and 53% generic drugs by claim count, with $15K 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 DAVID MAY, OD prescribe most often?
Based on 2023 Medicare Part D data, DAVID MAY, OD's most frequently prescribed drugs include Latanoprost, Timolol Maleate, Brimonidine Tartrate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID MAY, OD accept Medicare?
DAVID MAY, OD appears in CMS Medicare data with 197 Part D claims and 47 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID MAY, OD's credentials?
DAVID MAY, OD's NPI is 1801849633 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