Kathleen P. Penzenstadler, M.D.
Gynecology Physician · Franklin, WI
Kathleen P. Penzenstadler, M.D. is a gynecology physician with a practice address in Franklin, Wisconsin, and NPI 1326427824, issued on May 29, 2015. Check the license (Wisconsin 71468, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Kathleen P. Penzenstadler
- Credential
- M.D.
- Primary taxonomy
- Gynecology Physician 207VG0400X
- License number
- 71468 WI
Self-reported in NPPES; status is on the state search - Practice location
- 4202 W Oakwood Park CT Ste 120, Franklin, WI 53132
- Phone
- (414) 855-2800
- Enumerated
- May 29, 2015
- Record last updated
- Jul 24, 2025
- Medicaid ID
- 100091203 WI
- Medicare enrollment
- Enrolled (PECOS I20190814002621); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gynecology physician records → All 32 in Wisconsin → Look up another NPI →
Also registered at 4202 W Oakwood Park CT Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Christian, NPNurse Practitioner1962011981
Verify Kathleen P. Penzenstadler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 71468Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average gynecology physician in 2024
93 Medicare Part D claims for 40 beneficiaries, against an average of 299 among the 1,919 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Estradiol25 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 Advanced Healthcare, Inc.Franklin, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen P. Penzenstadler among 32 gynecology physician records in Wisconsin
Kathleen P. Penzenstadler, M.D. is one of 32 gynecology physician records with a practice address in Wisconsin. 44% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 84% of them.
- NPI issued2015 · 84% of these records are older, 13% newer
- In a Medicare fileYes · 44% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated2015 · median 2002 among the 12 with a school on file
- Record last updated2025 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207VG0400X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gynecology Physician providers in Wisconsin
There are 32 gynecology physician records in Wisconsin.
All 32 in Wisconsin → Every provider in Franklin → Gynecology Physician nationwide →
The 8 gynecology physician records with the nearest ZIP codes
- Rodney Halvorsen, M.D.Kenosha, WI 531421649388802
- Kelli Sasada, M.D.Pleasant Prairie, WI 531581265698690
- Jessica Thomason, MDMequon, WI 530921508187949
- Anne Riendl, M.D.Waukesha, WI 531881720023922
- Lisa Harshbarger, MDSummit, WI 530661144337759
- Jill Wohlfeil, MDOconomowoc, WI 530661386617447
- Patricia Dolhun, M.D.Milwaukee, WI 532021457305005
- Donald Baccus, M.D.Brookfield, WI 530451538152962
Common questions
What is Kathleen P. Penzenstadler, M.D.'s NPI number?
Kathleen P. Penzenstadler, M.D.'s National Provider Identifier (NPI) is 1326427824, issued on May 29, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen P. Penzenstadler, M.D. located?
The NPPES record lists a practice address at 4202 W Oakwood Park CT Ste 120, Franklin, WI, 53132. Phone: (414) 855-2800. Providers update this record themselves, so call before visiting.
How can I verify Kathleen P. Penzenstadler, M.D.'s license?
NPPES lists Wisconsin license number 71468, 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 Kathleen P. Penzenstadler, M.D. prescribe under Medicare Part D?
In 2024, Kathleen P. Penzenstadler, M.D. had 93 Medicare Part D claims for 40 beneficiaries; the average among gynecology physician prescribers was 299. 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.