Sandra K. Zernzach-Schertz, NP
Family Nurse Practitioner · Fond Du Lac, WI
Sandra K. Zernzach-Schertz, NP is a family nurse practitioner with a practice address in Fond Du Lac, Wisconsin, and NPI 1841395464, issued on Sep 14, 2006. Check the license (Wisconsin 2748-033, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sandra K. Zernzach-Schertz
- Credential
- NP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 2748-033 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1081 E Johnson St, Fond Du Lac, WI 54935
- Phone
- (920) 367-6700
- Enumerated
- Sep 14, 2006
- Record last updated
- May 22, 2024
- Medicaid ID
- 36012700 WI
- Medicare enrollment
- Enrolled (PECOS I20060425000234); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →
Also registered at 1081 E Johnson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rebecca Carpenter, APNPFamily Nurse Practitioner1417358623
- Wilhelm Huhndorf, APNPFamily Nurse Practitioner1174251540
- Shirin Pilakka Kandakkil, MDFamily Medicine Physician1811514656
Verify Sandra K. Zernzach-Schertz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2748-033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average family nurse practitioner in 2024
1,245 Medicare Part D claims for 252 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Atorvastatin Calcium96 claims
- Levothyroxine Sodium86 claims
- Amlodipine Besylate68 claims
- Lovastatin67 claims
- Lisinopril66 claims
- Losartan Potassium56 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 77.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Froedtert Manitowoc Medical Group, LLCFond Du Lac, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sandra K. Zernzach-Schertz among 2,814 family nurse practitioner records in Wisconsin
Sandra K. Zernzach-Schertz, NP is one of 2,814 family nurse practitioner records with a practice address in Wisconsin. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 90% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2005 · median 2019 among the 1,740 with a school on file
- Record last updated2024 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family nurse practitioner records list a practice address in Fond Du Lac
They are 56 of the 1,312 NPPES records with a practice address in Fond Du Lac, and 2,814 family nurse practitioner records in Wisconsin.
All 2,814 in Wisconsin → Every provider in Fond Du Lac → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Carol Delwiche, FNPFond Du Lac, WI 549351396736948
- Traci Freiberg, APNPFond Du Lac, WI 549351497860563
- Christine Hansen, APNPFond Du Lac, WI 549351508112020
- Dorothy Keenan, NPFond Du Lac, WI 549351518004480
- Heather Kuphal, APNPFond Du Lac, WI 549351083961833
- Rebecca Lentscher, APNPFond Du Lac, WI 549351902174089
- Sonia Miley, NPFond Du Lac, WI 549351861474082
- Stefanie Petrie, APNPFond Du Lac, WI 549351013247931
Common questions
What is Sandra K. Zernzach-Schertz, NP's NPI number?
Sandra K. Zernzach-Schertz, NP's National Provider Identifier (NPI) is 1841395464, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sandra K. Zernzach-Schertz, NP located?
The NPPES record lists a practice address at 1081 E Johnson St, Fond Du Lac, WI, 54935. Phone: (920) 367-6700. Providers update this record themselves, so call before visiting.
How can I verify Sandra K. Zernzach-Schertz, NP's license?
NPPES lists Wisconsin license number 2748-033, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Sandra K. Zernzach-Schertz, NP prescribe under Medicare Part D?
In 2024, Sandra K. Zernzach-Schertz, NP had 1,245 Medicare Part D claims for 252 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Sandra K. Zernzach-Schertz, NP's MIPS final score?
The 2023 MIPS final score is 77.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.