CATHERINE MAYER DO
NPI 1649891284
Surgery in Oshkosh, WI

Q: What is Catherine Mayer's NPI number?

The NPI number for Catherine Mayer is 1649891284. It was assigned to this individual provider in the NPPES registry on May 6, 2020.

Q: What is Catherine Mayer's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Q: When was this NPI record last updated?

The NPPES record for Catherine Mayer was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.

Active since May 06, 2020PECOS EnrolledAccepts Medicare Assignment

855 N WESTHAVEN DR, OSHKOSH, WI 54904(920) 303-8700 Get Directions Write a Review

NPPES record last updated: September 17, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 17, 2025, Sep 2, 2025, May 6, 2020 (3 updates tracked since 2020).

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About Catherine Mayer Do NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CATHERINE MAYER DO (NPI 1649891284) is an individual surgery provider in Oshkosh, Wisconsin, licensed in Wisconsin (76035-21) and active in the NPI registry since May 2020. She is enrolled in Medicare PECOS, is affiliated with Aurora Medical Ctr Oshkosh, and maintains a secondary practice location in Marshfield.

NPPES Registry Identity

NPI1649891284

Entity TypeIndividualFemale

Primary Taxonomy208600000X

Provider Legal NameCATHERINE MAYERCredential: DO

Location Address855 N WESTHAVEN DROshkosh, WI 54904-7668

Mailing AddressPo Box 735044Chicago, IL 60673-5044 · (800) 325-2250

Phone(920) 303-8700

Sole ProprietorNo

Medical School CMSOtherGraduated 2020

Enumeration DateMay 6, 2020

Last NPPES UpdateSeptember 17, 20253 updates tracked since enumeration

NPPES CertifiedSeptember 17, 2025

✔ NPI 1649891284 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians

Taxonomy Code208600000X

License✔ Licensed in WI · 76035-21

Definition

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

855 N WESTHAVEN DR, Oshkosh, WI 54904

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Secondary Practice Location 1

Location 11000 N Oak AveMarshfield, WI 54449-5702 · Phone (715) 387-9222

Other Identifiers 1

Medicaid100183475WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Catherine Mayer Do 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 ID6709274525

PECOS Enrollment IDI20250828000119

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.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Aurora Medical Ctr Oshkosh

Acute Care Hospitals · Oshkosh, WI

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number520198

Location855 N Westhaven DriveOshkosh, WI 54904 · Winnebago County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54904 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

$82.92 typical visit price

range $53.90 – $163.24

Typical copayment $20.73 (range $13.47 – $40.81)

Most-billed visit code 99203

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 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JACQUELINE ANN OTS PENDING

Nurse Practitioner