1. Home
  2. Directory
  3. Wisconsin
  4. Fond Du Lac
  5. Nurse Practitioner
  6. NPI Profile

MRS. SANDRA K ZERNZACH-SCHERTZ NP
NPI 1841395464
Nurse Practitioner - Family in Fond Du Lac, WI

Active since September 14, 2006PECOS EnrolledAccepts Medicare Assignment
77.77/100
CMS Quality Rating
1081 E JOHNSON ST, FOND DU LAC, WI 54935(920) 367-6700 Get Directions Write a Review

NPPES record last updated: May 22, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 12, 2023, Mar 12, 2021, Jun 22, 2020 (3 updates tracked since 2020).

About Mrs. Sandra K Zernzach-schertz Np NPPES

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

MRS. SANDRA K ZERNZACH-SCHERTZ NP (NPI 1841395464) is an individual family provider in Fond Du Lac, Wisconsin, licensed in Wisconsin (2748-033) and active in the NPI registry since September 2006. She is enrolled in Medicare PECOS, is affiliated with Ascension Ne Wisconsin - St Elizabeth Campus, and maintains a secondary practice location in Fond Du Lac.

NPPES Registry Identity

NPI1841395464
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameMRS. SANDRA K ZERNZACH-SCHERTZCredential: NP
Location Address1081 E JOHNSON STFond Du Lac, WI 54935-8919
Mailing Address889 E Johnson StFond Du Lac, WI 54935-2933 · (920) 367-6700
Phone(920) 367-6700
Sole ProprietorNo
Medical School CMSOtherGraduated 2005
Enumeration DateSeptember 14, 2006
Last NPPES UpdateMay 22, 20243 updates tracked since enumeration
NPPES CertifiedMay 22, 2024
✔ NPI 1841395464 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in WI · 2748-033
Also ListedNurse PractitionerTaxonomy 363L00000X · License 2748-033 (WI)
1081 E JOHNSON ST, Fond Du Lac, WI 54935
Open in Google Maps ↗

Secondary Practice Location 1

Location 1889 E Johnson StFond Du Lac, WI 54935-2933 · Phone (920) 367-6700

Other Identifiers 1

Medicaid36012700WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Dean Health Plan, Network Health.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

Mrs. Sandra K Zernzach-schertz Np 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 ID1355351198
PECOS Enrollment IDI20060425000234
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 Reassignments

3

Medicare enrollment records show Sandra Zernzach-schertz reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ascension Medical Group-Fox Valley Wisconsin, Inc
28 mi
Multi-Specialty
101 MAIN ST
Neenah, WI 54956
  • Reassigned Medicare billing, Wisconsin enrollment
  • 444 clinicians in this Medicare group
NPI 1730126392 (920) 727-4200
Froedtert Manitowoc Medical Group, LLC
42 mi
Multi-Specialty
2300 WESTERN AVE
Manitowoc, WI 54220
  • Reassigned Medicare billing, Wisconsin enrollment
  • 350 clinicians in this Medicare group
NPI 1437829975 (920) 320-2436
Froedtert & the Medical College Of Wisconsin Community Physicians, Inc.
45 mi
Internal Medicine
W180N8000 TOWN HALL RD
Menomonee Falls, WI 53051
  • Reassigned Medicare billing, Wisconsin enrollment
  • 2,294 clinicians in this Medicare group
NPI 1568787448 (262) 255-2500

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

Hospital Affiliations CMS Care Compare 2

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

Ascension NE Wisconsin - St Elizabeth Campus

Acute Care Hospitals · Appleton, WI
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number520009
Location1506 S Oneida StAppleton, WI 54915 · Outagamie County
Emergency services Birthing friendly

Holy Family Memorial

Acute Care Hospitals · Manitowoc, WI
3/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number520107
Location2300 Western AveManitowoc, WI 54221 · Manitowoc County
Emergency services

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
$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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

77.77/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.47
Promoting Interoperability77
Improvement Activities40
Cost63.8

Reported Quality Measures

Adult Sinusitis: Computerized Tomography (CT) for Acute Sinusitis (Overuse)
Percentage of patients aged 18 years and older with a diagnosis of acute sinusitis who had a computerized tomography (CT) scan of the paranasal sinuses ordered at the time of diagnosis or received within 28 days after date of diagnosis
Lower rates are better for this measure.
0%70 patients
Breast Cancer Screening
Percentage of women 50-74 years of age who had a mammogram to screen for breast cancer
79%417 patients4/55-star benchmark: 92%
Care Plan
Percentage of patients aged 65 years and older who have an advance care plan or surrogate decision maker documented in the medical record that an advance care plan was discussed but the patient did not wish or was not able to name a surrogate decision maker…
85%284 patients4/55-star benchmark: 100%
Cervical Cancer Screening
Percentage of women 21-64 years of age who were screened for cervical cancer using either of the following criteria: - Women age 21-64 who had cervical cytology performed every 3 years - Women age 30-64 who had cervical cytology/human papillomavirus (HPV)…
68%681 patients
Colorectal Cancer Screening
Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer
82%553 patients4/55-star benchmark: 85%
Depression Utilization of the PHQ-9 Tool
The percentage of patients age 18 and older with the diagnosis of major depression or dysthymia who have a completed PHQ-9 during each applicable 4 month period in which there was a qualifying visit
Patients 4MonthsOfEnd: 35% · 153 patients
Patients 4MonthsOfStart: 9% · 134 patients
12%157 patients
Diabetes: Eye Exam
Percentage of patients 18-75 years of age with diabetes who had a retinal or dilated eye exam by an eye care professional during the measurement period or a negative retinal exam (no evidence of retinopathy) in the 12 months prior to the measurement period
43%123 patients2/55-star benchmark: 100%
Documentation of Current Medications in the Medical Record
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter.
99%2,501 patients4/55-star benchmark: 100%
e-Prescribing
At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.
99%4,682 patients5/55-star benchmark: 99%
Health Information Exchange
The MIPS eligible clinician that transitions or refers their patient to another setting of care or health care clinician (1) uses CEHRT to create a summary of care record; and (2) electronically transmits such summary to a receiving health care clinician for…
50%511 patients3/55-star benchmark: 88%
Medication Reconciliation
The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.
86%81 patients2/55-star benchmark: 100%
Patient-Specific Education
The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.
92%1,416 patients4/55-star benchmark: 97%
Provide Patient Access
At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…
78%1,416 patients4/55-star benchmark: 100%
Secure Messaging
For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…
45%1,416 patients3/55-star benchmark: 89%
View, Download, or Transmit (VDT)
At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.
44%1,416 patients
Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Other Providers at the Same Location NPPES 3

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

MR. WILHELM HUHNDORF APNP
Nurse Practitioner (Family)
1081 E JOHNSON ST
FOND DU LAC, WI 54935
Fond Du Lac County (920) 367-6700
REBECCA JOYCE CARPENTER APNP
Nurse Practitioner (Family)
1081 E JOHNSON ST
FOND DU LAC, WI 54935
Fond Du Lac County (920) 367-6700
SHIRIN PILAKKA KANDAKKIL MD
Family Medicine
1081 E JOHNSON ST
FOND DU LAC, WI 54935
Fond Du Lac County (920) 367-6700

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 Sandra Zernzach-schertz's NPI number?

The NPI number for Sandra Zernzach-schertz is 1841395464. It was assigned to this individual provider in the NPPES registry on September 14, 2006.

Where is Sandra Zernzach-schertz located?

Sandra Zernzach-schertz practices at 1081 E Johnson St, Fond Du Lac, WI 54935. The listed phone number is (920) 367-6700.

What is Sandra Zernzach-schertz's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Sandra Zernzach-schertz enrolled in Medicare?

Yes. Sandra Zernzach-schertz 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 organizations bill Medicare for Sandra Zernzach-schertz's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sandra Zernzach-schertz reassigns Medicare benefits to 3 organizations: Ascension Medical Group-Fox Valley Wisconsin, Inc (Neenah, WI), Froedtert Manitowoc Medical Group, LLC (Manitowoc, WI) and Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI). Each 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 Sandra Zernzach-schertz's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Sandra Zernzach-schertz accept?

Health plans from Anthem Blue Cross and Blue Shield, Dean Health Plan and Network Health list Sandra Zernzach-schertz 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.

Is Sandra Zernzach-schertz affiliated with any hospitals?

According to CMS data, Sandra Zernzach-schertz is affiliated with Ascension NE Wisconsin - St Elizabeth Campus and Holy Family Memorial.

When was this NPI record last updated?

The NPPES record for Sandra Zernzach-schertz was last updated on May 22, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.