Mary K. Gatzke, DNP
Gerontology Nurse Practitioner · Watertown, WI
Mary K. Gatzke, DNP is a gerontology nurse practitioner with a practice address in Watertown, Wisconsin, and NPI 1205823630, issued on Sep 30, 2005. Check the license (Wisconsin 2426-33, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary K. Gatzke
- Credential
- DNP
- Primary taxonomy
- Gerontology Nurse Practitioner 363LG0600X
- License numbers
- 2426-33 WI
2426033 WI
4704241650 MI
Self-reported in NPPES; status is on the state search - Practice location
- W5726 County T, Watertown, WI 53094
- Phone
- (920) 253-6582
- Enumerated
- Sep 30, 2005
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 43999100 WI
- Entity
- Type 1 · individual
8 nearest gerontology nurse practitioner records → All 146 in Wisconsin → Look up another NPI →
Verify Mary K. Gatzke in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 2426-33Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average gerontology nurse practitioner in 2024
13 Medicare Part D claims, against an average of 1,369 among the 6,165 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Atenolol13 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.
Mary K. Gatzke among 146 gerontology nurse practitioner records in Wisconsin
Mary K. Gatzke, DNP is one of 146 gerontology 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 55% of these records are
- Record last updated2021 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LG0600X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gerontology Nurse Practitioner providers in Wisconsin
There are 146 gerontology nurse practitioner records in Wisconsin.
All 146 in Wisconsin → Every provider in Watertown → Gerontology Nurse Practitioner nationwide →
The 8 gerontology nurse practitioner records with the nearest ZIP codes
- Fatima Ali, NPMequon, WI 530921164305603
- Mary Kautz, APNPMequon, WI 530971013152743
- Andrea Enters, NURSE PRACTITIONERSussex, WI 530891336540418
- Tonya Cyrulik, AGPCNPBurlington, WI 531051568312130
- Rachel Rejniak, AGPCNP-BCSheboygan, WI 530811003537150
- Doris Theune, MS RN CSSheboygan, WI 530811023086402
- Bette Frangesch, RN GNP APNPElm Grove, WI 531221336218957
- Natasha El Hmaini, NPGreendale, WI 531291891112405
Common questions
What is Mary K. Gatzke, DNP's NPI number?
Mary K. Gatzke, DNP's National Provider Identifier (NPI) is 1205823630, issued on Sep 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mary K. Gatzke, DNP located?
The NPPES record lists a practice address at W5726 County T, Watertown, WI, 53094. Phone: (920) 253-6582. Providers update this record themselves, so call before visiting.
How can I verify Mary K. Gatzke, DNP's license?
NPPES lists Wisconsin license number 2426-33, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Mary K. Gatzke, DNP prescribe under Medicare Part D?
In 2024, Mary K. Gatzke, DNP had 13 Medicare Part D claims; the average among gerontology nurse practitioner prescribers was 1,369. 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.