Cortney D. Birschbach, OD
Optometrist · Fond Du Lac, WI
Cortney D. Birschbach, OD is an optometrist with a practice address in Fond Du Lac, Wisconsin, and NPI 1376105700, issued on Jul 6, 2019. Check the license (Wisconsin 3576-35, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cortney D. Birschbach
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 3576-35 WI
Self-reported in NPPES; status is on the state search - Practice location
- 355 N Peters Ave, Fond Du Lac, WI 54935
- Phone
- (920) 922-7121
- Enumerated
- Jul 6, 2019
- Record last updated
- Apr 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20191018000337); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 2019
- Entity
- Type 1 · individual
8 nearest optometrist records → All 1,161 in Wisconsin → Look up another NPI →
Also registered at 355 N Peters Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jessica Kulick, O.D.Optometrist1295186690
- Dave Langholff, D.C.Orthopedic Chiropractor1952374118
- Grant Lepley, O.D.Optometrist1831538727
- James Neuber, D.C.Chiropractor1104927854
- Kenneth Scholz, DDSGeneral Practice Dentistry1528062452
Verify Cortney D. Birschbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 3576-35Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average optometrist in 2024
124 Medicare Part D claims for 44 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Latanoprost54 claims
- Timolol Maleate22 claims
- Neomycin-Polymyxin-Dexameth12 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: $271.89
15 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 34,453 providers of this specialty with any payment received $769.99 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Aeg Wisconsin Professional LtdFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cortney D. Birschbach among 1,161 optometrist records in Wisconsin
Cortney D. Birschbach, OD is one of 1,161 optometrist records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 83% of them.
- NPI issued2019 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2019 · median 2008 among the 752 with a school on file
- Record last updated2020 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 optometrist records list a practice address in Fond Du Lac
They are 19 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 1,161 optometrist records in Wisconsin.
All 1,161 in Wisconsin → Every provider in Fond Du Lac → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Nicole Amidon, O.D.Fond Du Lac, WI 549351992762835
- George Boling, O.D.Fond Du Lac, WI 549351639241508
- Pamela Brown, ODFond Du Lac, WI 549351578554234
- Tristan Brown, ODFond Du Lac, WI 549351477083608
- J Conran, O.D.Fond Du Lac, WI 549351790798189
- Julie Henry, ODFond Du Lac, WI 549351295842805
- Stuart Kosikowski, ODFond Du Lac, WI 549351831170141
- Jessica Kulick, O.D.Fond Du Lac, WI 549351295186690
Common questions
What is Cortney D. Birschbach, OD's NPI number?
Cortney D. Birschbach, OD's National Provider Identifier (NPI) is 1376105700, issued on Jul 6, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Cortney D. Birschbach, OD located?
The NPPES record lists a practice address at 355 N Peters Ave, Fond Du Lac, WI, 54935. Phone: (920) 922-7121. Providers update this record themselves, so call before visiting.
How can I verify Cortney D. Birschbach, OD's license?
NPPES lists Wisconsin license number 3576-35, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Cortney D. Birschbach, OD prescribe under Medicare Part D?
In 2024, Cortney D. Birschbach, OD had 124 Medicare Part D claims for 44 beneficiaries; the average among optometrist prescribers was 277. 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.