Kay Zier, APNP
Nurse Practitioner · Oshkosh, WI
Kay Zier, APNP is a nurse practitioner with a practice address in Oshkosh, Wisconsin, and NPI 1053859942, issued on Feb 10, 2017. Check the license (Wisconsin 6884-033, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Kay Zier
- Credential
- APNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License number
- 6884-033 WI
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 303-8700
- Enumerated
- Feb 10, 2017
- Record last updated
- Mar 18, 2026
- Fax
- (920) 456-5711
- Medicaid ID
- 100065400 WI
- Medicare enrollment
- Enrolled (PECOS I20170320000105); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,995 in Wisconsin → Look up another NPI →
Also registered at 855 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Kay Zier in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 6884-033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average nurse practitioner in 2024
1,006 Medicare Part D claims for 125 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium54 claims
- Amlodipine Besylate38 claims
- Omeprazole36 claims
- Levothyroxine Sodium31 claims
- Hydrochlorothiazide28 claims
- Losartan Potassium26 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.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Oshkosh, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kay Zier among 3,995 nurse practitioner records in Wisconsin
Kay Zier, APNP is one of 3,995 nurse practitioner records with a practice address in Wisconsin. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 55% of them.
- NPI issued2017 · 55% of these records are older, 39% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2017 among the 2,701 with a school on file
- Record last updated2026 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
92 nurse practitioner records list a practice address in Oshkosh
They are 92 of the 1,527 NPPES records with a practice address in Oshkosh, and 3,995 nurse practitioner records in Wisconsin.
All 3,995 in Wisconsin → Every provider in Oshkosh → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Diane Ames, APNPOshkosh, WI 549041740357235
- Jamie Bonell, APNPOshkosh, WI 549041790832228
- Judith Brockman, APNPOshkosh, WI 549041073522728
- Suzanne Kiefer, APNPOshkosh, WI 549041083640056
- Xing Kong, NPOshkosh, WI 549041003896093
- Cindy Malson, APNPOshkosh, WI 549041770690232
- Gladys Michaelson, APNPOshkosh, WI 549041205828654
- Pamela Netzer, APNPOshkosh, WI 549041790892149
Common questions
What is Kay Zier, APNP's NPI number?
Kay Zier, APNP's National Provider Identifier (NPI) is 1053859942, issued on Feb 10, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Kay Zier, APNP located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 303-8700. Providers update this record themselves, so call before visiting.
How can I verify Kay Zier, APNP's license?
NPPES lists Wisconsin license number 6884-033, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Kay Zier, APNP prescribe under Medicare Part D?
In 2024, Kay Zier, APNP had 1,006 Medicare Part D claims for 125 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
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.