David May, OD
NPI 1801849633 · Corneal and Contact Management Optometrist · Waunakee, WI
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David May, OD is a Corneal and Contact Management Optometrist provider in Waunakee, WI (NPI 1801849633).
Provider details
- NPI number
- 1801849633
- Entity type
- Individual
- Primary specialty
- Corneal and Contact Management OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 2674-035 (WI)
Specialties & taxonomies
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,945 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 2,250 | $1 |
| Established Patient Complete Exam of Visual System92014 | 247 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $86 |
| Imaging of Retina92134 | 73 | $38 |
| Imaging of Optic Nerve92133 | 63 | $33 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 97 | 30 |
| Timolol Maleate | 37 | 11 |
| Brinzolamide/Brimonidine Tartbrand: Simbrinza | 19 | — |
| Brimonidine Tartrate | 18 | — |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$934 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2017-08-30
Frequently asked questions
- What is David May's NPI number?
- David May's National Provider Identifier (NPI) is 1801849633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David May's specialty?
- David May is listed in the NPPES registry with a primary specialty of Corneal and Contact Management Optometrist (Eye and Vision Services Providers).
- Where is David May located?
- David May's practice location on file with NPPES is 330 N Century Ave, Waunakee, WI 53597-1147.
- What is David May's phone number?
- The practice phone number listed in the NPPES registry for David May is (608) 849-3937.
- Does David May accept Medicare?
- David May is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David May's NPI active?
- Yes — David May's NPI (1801849633) is active in the NPPES registry as of the last update on 2017-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.