Registry data as of Aug 27, 2026

Timothy Corgan, O.D.

Optometrist · Marinette, WI

Timothy Corgan, O.D. is an optometrist with a practice address in Marinette, Wisconsin, and NPI 1790731743, issued on May 25, 2006. Check the license (Wisconsin 2655-035, 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, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1790731743
Name
Timothy Corgan
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License numbers
2655-035 WI
4901003841 MI
Self-reported in NPPES; status is on the state search
Practice location
1400 University Dr, Marinette, WI 54143
Phone
(715) 732-4181
Enumerated
May 25, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Timothy Corgan 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 2655-035
    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
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

2.1 times the Medicare Part D claims of the average optometrist in 2024

583 Medicare Part D claims for 106 beneficiaries, against an average of 279 among the 32,314 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Timothy Corgan583
  2. Specialty average279

Most prescribed

  1. Latanoprost241 claims
  2. Timolol Maleate130 claims
  3. Brimonidine Tartrate-Timolol41 claims
  4. Fluorometholone21 claims
  5. Combigan20 claims
  6. Dorzolamide Hcl17 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: $17.57

1 payment, mostly food and beverage; the largest payer was Johnson & Johnson Vision Care, Inc.. The 33,561 providers of this specialty with any payment received $749.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Timothy Corgan$17.57
  2. Specialty average$749.79

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

Optometrist providers in Wisconsin

There are 1,142 optometrist records in Wisconsin.

Other optometrist records in Wisconsin

  1. Katie Abata, O.D.Appleton, WI1043646623
  2. Brianna Adams, ODStoughton, WI1093605222
  3. Gerald Adams, ODWestby, WI1760479182
  4. James AdamsPortage, WI1154007953
  5. Lawrence Addison, O.D.Weston, WI1760794697
  6. Farzana AkterWaupun, WI1346821725
  7. Margarette Elaine Alcesto, ODShorewood, WI1669984563
  8. Robert Alexejun, O.D.Wausau, WI1235275009
  9. Carmen Alfonso-Kneiert, ODFort Atkinson, WI1710938634
  10. Jennifer Alvarez, O.D.Brookfield, WI1316255805

Common questions

What is Timothy Corgan, O.D.'s NPI number?

Timothy Corgan, O.D.'s National Provider Identifier (NPI) is 1790731743, issued on May 25, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Timothy Corgan, O.D. located?

The NPPES record lists a practice address at 1400 University Dr, Marinette, WI, 54143. Phone: (715) 732-4181. Providers update this record themselves, so call before visiting.

How can I verify Timothy Corgan, O.D.'s license?

NPPES lists Wisconsin license number 2655-035, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Timothy Corgan, O.D. prescribe under Medicare Part D?

In 2024, Timothy Corgan, O.D. had 583 Medicare Part D claims for 106 beneficiaries; the average among optometrist prescribers was 279. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.