Timothy Jon Wittwer, RN, MSN, FNP
Family Nurse Practitioner · Milwaukee, WI
Timothy Jon Wittwer, RN, MSN, FNP is a family nurse practitioner with a practice address in Milwaukee, Wisconsin, and NPI 1982601019, issued on Jul 5, 2005. Check the license (Wisconsin 1314-033, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Timothy Jon Wittwer
- Credential
- RN, MSN, FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 1314-033 WI
Self-reported in NPPES; status is on the state search - Practice location
- 5000 W National Ave, Milwaukee, WI 53295
- Phone
- (414) 384-2000
- Enumerated
- Jul 5, 2005
- Record last updated
- Dec 27, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (414) 382-5295
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 2,814 in Wisconsin → Look up another NPI →
Also registered at 5000 W National Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Victoria Adams, PHARMDPharmacist1457639692
- Keighlynn Adlof, PSYDClinical Psychologist1215385489
- Noah Adrians, PH. D.Psychologist1487934683
- Karen Adwan, PHARM.D., CGPPharmacist1518062553
- Barbara Alberti, RN, APNPFamily Nurse Practitioner1750568465
- Jason Val Alegro, PHARM.D.Pharmacist1487010781
Verify Timothy Jon Wittwer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1314-033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average family nurse practitioner in 2024
116 Medicare Part D claims for 15 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium18 claims
- Gabapentin12 claims
- Losartan Potassium11 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.
Timothy Jon Wittwer among 2,814 family nurse practitioner records in Wisconsin
Timothy Jon Wittwer, RN, MSN, FNP 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2019 · 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).
458 family nurse practitioner records list a practice address in Milwaukee
They are 458 of the 18,389 NPPES records with a practice address in Milwaukee, and 2,814 family nurse practitioner records in Wisconsin.
All 2,814 in Wisconsin → Every provider in Milwaukee → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Barbara Alberti, RN, APNPMilwaukee, WI 532951750568465
- Laurel Breit, APRNMilwaukee, WI 532951164427779
- Linda Daufenbach, FNPMilwaukee, WI 532951922016732
- Mary Karfonta, FNPMilwaukee, WI 532951265436737
- Michelle Mezaros-Olson, NURSE PRACITIONERMilwaukee, WI 532951932170354
- Diane Mosey, APNPMilwaukee, WI 532951174930788
- Leann Pierce, NPMilwaukee, WI 532951487606794
- Stanley Rintelmann, RN, MSN, FNP-BCMilwaukee, WI 532951255315768
Common questions
What is Timothy Jon Wittwer, RN, MSN, FNP's NPI number?
Timothy Jon Wittwer, RN, MSN, FNP's National Provider Identifier (NPI) is 1982601019, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Jon Wittwer, RN, MSN, FNP located?
The NPPES record lists a practice address at 5000 W National Ave, Milwaukee, WI, 53295. Phone: (414) 384-2000. Providers update this record themselves, so call before visiting.
How can I verify Timothy Jon Wittwer, RN, MSN, FNP's license?
NPPES lists Wisconsin license number 1314-033, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
How much does Timothy Jon Wittwer, RN, MSN, FNP prescribe under Medicare Part D?
In 2024, Timothy Jon Wittwer, RN, MSN, FNP had 116 Medicare Part D claims for 15 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.