NPPES file of Aug 9, 2026

David K. May, OD

Corneal and Contact Management Optometrist · Waunakee, WI

David K. May, OD is a corneal and contact management optometrist with a practice address in Waunakee, Wisconsin, and NPI 1801849633, issued on May 19, 2006. Check the license (Wisconsin 2674-035, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1801849633
Name
David K. May
Credential
OD
Primary taxonomy
Corneal and Contact Management Optometrist 152WC0802X
License numbers
2674-035 WI
2674-35 WI
Self-reported in NPPES; status is on the state search
Practice location
330 N Century Ave, Waunakee, WI 53597
Phone
(608) 849-3937
Enumerated
May 19, 2006
Record last updated
Aug 30, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(608) 849-5177
Medicare enrollment
Enrolled (PECOS I20060908000434); accepts Medicare assignment
Medical or professional school
Illinois College Of Optometry At Chicago, 1996
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 330 N Century Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jacob Heffelfinger, ODOptometrist1477346302

Verify David K. May in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 2674-035
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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2% fewer Medicare Part D claims than the average corneal and contact management optometrist in 2024

220 Medicare Part D claims for 46 beneficiaries, against an average of 225 among the 585 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.

  1. David May220
  2. Specialty average225

Most prescribed

  1. Latanoprost97 claims
  2. Timolol Maleate37 claims
  3. Simbrinza19 claims
  4. Brimonidine Tartrate18 claims
  5. Brimonidine Tartrate-Timolol11 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $934.10

13 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 610 providers of this specialty with any payment received $1,035.17 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David May$934.10
  2. Specialty average$1,035.17

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. May Vision Center LLCWaunakee, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Corneal and Contact Management Optometrist providers in Wisconsin

There are 14 corneal and contact management optometrist records in Wisconsin.

Other corneal and contact management optometrist records in Wisconsin

  1. Donna Brunello, O.D.Kenosha, WI1821021445
  2. Tai Chan, O.D.Waupun, WI1508908872
  3. Kerry Griebenow, O.D.New London, WI1063487072
  4. David Hammes, O.D.Fond Du Lac, WI1588745756
  5. James Healy, O.D.Monroe, WI1053487124
  6. Rebecca Kabat, ODEau Claire, WI1043282106
  7. Greg Matus, O.D.Franklin, WI1407840531
  8. Steven Nottleson, O.D.Marinette, WI1215996723
  9. Oscar Ortiz, O.D.Madison, WI1215182563
  10. Chad Overman, O.D.Richland Center, WI1982705810

Common questions

What is David K. May, OD's NPI number?

David K. May, OD's National Provider Identifier (NPI) is 1801849633, issued on May 19, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David K. May, OD located?

The NPPES record lists a practice address at 330 N Century Ave, Waunakee, WI, 53597. Phone: (608) 849-3937. Providers update this record themselves, so call before visiting.

How can I verify David K. May, OD's license?

NPPES lists Wisconsin license number 2674-035, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does David K. May, OD prescribe under Medicare Part D?

In 2024, David K. May, OD had 220 Medicare Part D claims for 46 beneficiaries; the average among corneal and contact management optometrist prescribers was 225. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.