CORTNEY D BIRSCHBACH OD
NPI 1376105700
Optometrist in Fond Du Lac, WI

Active since July 06, 2019PECOS EnrolledAccepts Medicare Assignment
355 N PETERS AVE, FOND DU LAC, WI 54935(920) 922-7121 Get Directions Write a Review

NPPES record last updated: April 17, 2020. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Apr 17, 2020, Apr 10, 2020, Jul 6, 2019 (3 updates tracked since 2019).

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

NPI1376105700
Entity TypeIndividualFemale
Primary Taxonomy152W00000X
Provider Legal NameCORTNEY D BIRSCHBACHCredential: OD
Location Address355 N PETERS AVEFond Du Lac, WI 54935-8258
Mailing Address355 N Peters AveFond Du Lac, WI 54935-8258 · (920) 922-7121
Sole ProprietorNo
Medical School CMSIllinois College Of Optometry At ChicagoGraduated 2019
Enumeration DateJuly 6, 2019
Last NPPES UpdateApril 17, 20203 updates tracked since enumeration
NPPES CertifiedApril 17, 2020
✔ NPI 1376105700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
License✔ Licensed in WI · 3576-35
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
Also ListedOptometrist · Corneal and Contact ManagementTaxonomy 152WC0802X · License 3576-35 (WI)
355 N PETERS AVE, Fond Du Lac, WI 54935

Other Names 1

Former Name (1)Cortney D Dudley Od

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.

PECOS PAC ID4082945282
PECOS Enrollment IDI20191018000337
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Optometrist
2215 VINE ST, SUITE E
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.

Established patient complete exam of visual system 92014
An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.
56 services56 patients
Imaging of optic nerve 92133
Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).
15 services13 patients
Imaging of retina 92134
Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.
15 services12 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
15 services13 patients

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.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Chiropractor
355 N PETERS AVE
FOND DU LAC, WI 54935
Optometrist
355 N PETERS AVE
FOND DU LAC, WI 54935
Clinic/Center (Physical Therapy)
355 N PETERS AVE
FOND DU LAC, WI 54935
Dentist (General Practice)
355 N PETERS AVE
FOND DU LAC, WI 54935
Durable Medical Equipment & Medical Supplies
355 N PETERS AVE
FOND DU LAC, WI 54935
Optometrist (Corneal and Contact Management)
355 N PETERS AVE
FOND DU LAC, WI 54935
Optometrist
355 N PETERS AVE
FOND DU LAC, WI 54935
Chiropractor
355 N PETERS AVE
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.