NPPES file of Aug 9, 2026

Ann Elizabeth Wittwer, NP

Adult Health Nurse Practitioner · Milwaukee, WI

Ann Elizabeth Wittwer, NP is an adult health nurse practitioner with a practice address in Milwaukee, Wisconsin, and NPI 1598769911, issued on Jun 13, 2005. Check the license (Wisconsin 1836-033, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598769911
Name
Ann Elizabeth Wittwer
Credential
NP
Primary taxonomy
Adult Health Nurse Practitioner 363LA2200X
License number
1836-033 WI
Self-reported in NPPES; status is on the state search
Practice location
5000 West National Ave, Milwaukee, WI 53295
Phone
(414) 384-2000
Enumerated
Jun 13, 2005
Record last updated
Jul 13, 2026
Fax
(414) 398-4198
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest adult health nurse practitioner records → All 398 in Wisconsin → Look up another NPI →

Also registered at 5000 West National Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Augustus Alexander, A.T.Addiction (Substance Use Disorder) Counselor1184719551
  2. Catherine De Young, BSWClinical Social Worker1285718767

Verify Ann Elizabeth Wittwer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 1836-033    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

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96% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024

45 Medicare Part D claims, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Ann Wittwer45
  2. Specialty average1,280

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.

Ann Elizabeth Wittwer among 398 adult health nurse practitioner records in Wisconsin

Ann Elizabeth Wittwer, NP is one of 398 adult health nurse practitioner records with a practice address in Wisconsin. 57% 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, 95% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2026 · 69% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Adult Health Nurse Practitioner providers in Wisconsin

There are 398 adult health nurse practitioner records in Wisconsin.

All 398 in Wisconsin → Every provider in Milwaukee → Adult Health Nurse Practitioner nationwide →

The 8 adult health nurse practitioner records with the nearest ZIP codes

  1. Deborah Cales, APNPMilwaukee, WI 532951477570554
  2. Karen Franklin, MSNMilwaukee, WI 532951366458390
  3. Deborah Glime, APNPMilwaukee, WI 532951265713549
  4. Joseph Glowacki, R.N.Milwaukee, WI 532951326252644
  5. Mary Hammer, APRNMilwaukee, WI 532951679597314
  6. Lynn Hermanns, NPMilwaukee, WI 532951962496000
  7. Wendy Janssen, MS, ANPMilwaukee, WI 532951356347686
  8. Julie Jensen, RNMSNC-ANPAPNPMilwaukee, WI 532951760486625

Common questions

What is Ann Elizabeth Wittwer, NP's NPI number?

Ann Elizabeth Wittwer, NP's National Provider Identifier (NPI) is 1598769911, issued on Jun 13, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Ann Elizabeth Wittwer, NP located?

The NPPES record lists a practice address at 5000 West National Ave, Milwaukee, WI, 53295. Phone: (414) 384-2000. Providers update this record themselves, so call before visiting.

How can I verify Ann Elizabeth Wittwer, NP's license?

NPPES lists Wisconsin license number 1836-033, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

How much does Ann Elizabeth Wittwer, NP prescribe under Medicare Part D?

In 2024, Ann Elizabeth Wittwer, NP had 45 Medicare Part D claims; the average among adult health nurse practitioner prescribers was 1,280. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.