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GREGORY T SCHIMKAT RN, MSN
NPI 1275464265
Nurse Practitioner - Psychiatric/Mental Health in Oshkosh, WI

Active since May 27, 2026PECOS Enrolled
600 N WESTHAVEN DR, OSHKOSH, WI 54904(920) 720-2300 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 27, 2026, Jul 26, 2026, May 27, 2026 (3 updates tracked since 2026).

About Gregory T Schimkat Rn, Msn NPPES

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

GREGORY T SCHIMKAT RN, MSN (NPI 1275464265) is an individual psychiatric/mental health provider in Oshkosh, Wisconsin, licensed in Wisconsin (1863333) and active in the NPI registry since May 2026. He is enrolled in Medicare PECOS and is a graduate of Other (2026).

NPPES Registry Identity

NPI1275464265
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameGREGORY T SCHIMKATCredential: RN, MSN
Location Address600 N WESTHAVEN DROshkosh, WI 54904-6926
Mailing Address600 N Westhaven DrOshkosh, WI 54904-6926 · (920) 720-2300 · Fax (920) 720-3719
Phone(920) 720-2300
Sole ProprietorNo
Medical School CMSOtherGraduated 2026
Enumeration DateMay 27, 2026
Last NPPES UpdateJuly 27, 20263 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1275464265 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in WI · 1863333
Also ListedNurse PractitionerTaxonomy 363L00000X · License 18633 (WI)
600 N WESTHAVEN DR, Oshkosh, WI 54904
Open in Google Maps ↗

Other Names 1

Professional Name (2)Mr. Gregory Taylor Schimkat Rn, Msn

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory T Schimkat Rn, Msn is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8820555279
PECOS Enrollment IDI20260806000623
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 Gregory Schimkat reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Thedacare, Incorporated
16 mi
Counselor
1095 MIDWAY RD
Menasha, WI 54952
  • Reassigned Medicare billing, Wisconsin enrollment
  • 988 clinicians in this Medicare group
NPI 1306959515 (920) 720-2300

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
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.

HOLLY A HEDGE APNP
Nurse Practitioner
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
MRS. SARAH ELIZABETH DANAHY LCSW
Social Worker (Clinical)
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
DR. MATTHEW S ANDERSON M.D.
Urology
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 722-7747
MARIAREVE RUCINSKI ANP
Nurse Practitioner
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
JESSICA RICE FNP
Nurse Practitioner (Family)
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
BAYLEE GORGES PHARMD
Pharmacist
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
DR. DANIEL J KAISER MD
Family Medicine
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000
EMILY ZIEGLER
Physical Therapist
600 N WESTHAVEN DR
OSHKOSH, WI 54904
Winnebago County (920) 237-5000

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 Gregory Schimkat's NPI number?

The NPI number for Gregory Schimkat is 1275464265. It was assigned to this individual provider in the NPPES registry on May 27, 2026. The provider is also known as Mr. Gregory Taylor Schimkat Rn, Msn.

Where is Gregory Schimkat located?

Gregory Schimkat practices at 600 N Westhaven Dr, Oshkosh, WI 54904. The listed phone number is (920) 720-2300.

What is Gregory Schimkat's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Gregory Schimkat enrolled in Medicare?

Yes. Gregory Schimkat is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gregory Schimkat's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Schimkat reassigns Medicare benefits to Thedacare, Incorporated (Menasha, 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 Gregory Schimkat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Gregory Schimkat accept?

Health plans from Anthem Blue Cross and Blue Shield and CareSource (Common Ground Healthcare) list Gregory Schimkat 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 Gregory Schimkat was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.