CORTNEY D BIRSCHBACH OD
NPI 1376105700
Optometrist in Fond Du Lac, WI
About Cortney D Birschbach Od NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CORTNEY D BIRSCHBACH OD (NPI 1376105700) is an individual optometrist in Fond Du Lac, Wisconsin, licensed in Wisconsin (3576-35) and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS and is a graduate of Illinois College Of Optometry At Chicago (2019).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Cortney D Birschbach Od is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Cortney Birschbach reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Hudson, WI 54016
- Reassigned Medicare billing, Wisconsin enrollment
- 21 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 54935 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FOND DU LAC, WI 54935
FOND DU LAC, WI 54935
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Cortney Birschbach's NPI number?
The NPI number for Cortney Birschbach is 1376105700. It was assigned to this individual provider in the NPPES registry on July 6, 2019. The provider is also known as Cortney D Dudley Od.
Where is Cortney Birschbach located?
Cortney Birschbach practices at 355 N Peters Ave, Fond Du Lac, WI 54935. The listed phone number is (920) 922-7121.
What is Cortney Birschbach's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Cortney Birschbach enrolled in Medicare?
Yes. Cortney Birschbach is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Cortney Birschbach's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cortney Birschbach reassigns Medicare benefits to Aeg Wisconsin Professional Ltd (Hudson, WI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Cortney Birschbach's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Cortney Birschbach accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 6 other insurers list Cortney Birschbach as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Cortney Birschbach was last updated on April 17, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.