Peter W. Timmermans, MD
Family Medicine Physician · Waupun, WI
Peter W. Timmermans, MD is a family medicine physician with a practice address in Waupun, Wisconsin, and NPI 1346223690, issued on Nov 21, 2005. Check the license (Wisconsin 23519, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Peter W. Timmermans
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 23519 WI
Self-reported in NPPES; status is on the state search - Practice location
- 608 W Brown St, Waupun, WI 53963
- Phone
- (920) 324-6801
- Enumerated
- Nov 21, 2005
- Record last updated
- Dec 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 30367500 WI
- Medicare enrollment
- Enrolled (PECOS I20100521000162); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 608 W Brown St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Peter W. Timmermans in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 23519Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average family medicine physician in 2024
991 Medicare Part D claims for 338 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 47 claims were for opioids.
Most prescribed
- Cefdinir47 claims
- Rosuvastatin Calcium47 claims
- Furosemide29 claims
- Omeprazole28 claims
- Celecoxib27 claims
- Prednisone27 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
- Agnesian Healthcare IncWaupun, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter W. Timmermans among 3,765 family medicine physician records in Wisconsin
Peter W. Timmermans, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 75% 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, 90% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1979 · median 2007 among the 2,347 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
13 family medicine physician records list a practice address in Waupun
They are 13 of the 131 NPPES records with a practice address in Waupun, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Waupun → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Ahmed Dessouki, M.D.Waupun, WI 539631942424403
- Scott Hoftiezer, MDWaupun, WI 539631841344272
- Michael Jones, DOWaupun, WI 539631568533966
- Roman Kaplan, MDWaupun, WI 539631134254725
- Richard McMahon, DOWaupun, WI 539631437100807
- Robert Nagle, DOWaupun, WI 539631770565988
- Bre Anna Nagle, MDWaupun, WI 539631891112793
- Robert Newton, DOWaupun, WI 539631487636692
Common questions
What is Peter W. Timmermans, MD's NPI number?
Peter W. Timmermans, MD's National Provider Identifier (NPI) is 1346223690, issued on Nov 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Peter W. Timmermans, MD located?
The NPPES record lists a practice address at 608 W Brown St, Waupun, WI, 53963. Phone: (920) 324-6801. Providers update this record themselves, so call before visiting.
How can I verify Peter W. Timmermans, MD's license?
NPPES lists Wisconsin license number 23519, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Peter W. Timmermans, MD prescribe under Medicare Part D?
In 2024, Peter W. Timmermans, MD had 991 Medicare Part D claims for 338 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.