Peter J. Bartz, M.D.
Pediatric Cardiology Physician · Milwaukee, WI
Peter J. Bartz, M.D. is a pediatric cardiology physician with a practice address in Milwaukee, Wisconsin, and NPI 1497728794, issued on Feb 8, 2006. Check the license (Wisconsin 49026, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Peter J. Bartz
- Credential
- M.D.
- Primary taxonomy
- Pediatric Cardiology Physician 2080P0202X
- License number
- 49026 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9000 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 266-4762
- Enumerated
- Feb 8, 2006
- Record last updated
- Apr 1, 2025
- Fax
- (414) 266-3261
- Medicaid IDs
- 1497728794 WI
590618100 MN - Medicare enrollment
- Enrolled (PECOS I20140131000483); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1999
- Entity
- Type 1 · individual
8 nearest pediatric cardiology physician records → All 72 in Wisconsin → Look up another NPI →
Also registered at 9000 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lynn Abad-Santos, APNPPediatric Nurse Practitioner1184675696
- Steven AbramowskiPediatric Nurse Practitioner1871118802
- Thomas Abshire, MDPediatric Hematology & Oncology Physician1730249681
- Elham Abushanab, M.D.Neurology with Special Qualifications in Child Neurology Physician1306392634
- Samuel Adams, M.D.Neurology with Special Qualifications in Child Neurology Physician1972947224
- Adeleye Afolayan, M.DNeonatal-Perinatal Medicine Physician1760649776
Verify Peter J. Bartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49026Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average pediatric cardiology physician in 2024
209 Medicare Part D claims for 25 beneficiaries, against an average of 74 among the 518 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Metoprolol Succinate22 claims
- Warfarin Sodium20 claims
- Furosemide18 claims
- Spironolactone18 claims
- Opsumit17 claims
- Digoxin14 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 3 group practices
- Childrens Specialty Group IncMilwaukee, WI
- Dickinson County Healthcare SystemIron Mountain, MI
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Peter J. Bartz among 72 pediatric cardiology physician records in Wisconsin
Peter J. Bartz, M.D. is one of 72 pediatric cardiology 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 2006, is newer than 4% of them.
- NPI issued2006 · 4% of these records are older, 64% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1999 · median 2006 among the 46 with a school on file
- Record last updated2025 · 32% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0202X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Cardiology Physician providers in Wisconsin
There are 72 pediatric cardiology physician records in Wisconsin.
All 72 in Wisconsin → Every provider in Milwaukee → Pediatric Cardiology Physician nationwide →
The 8 pediatric cardiology physician records with the nearest ZIP codes
- Osamah Aldoss, M.D.Milwaukee, WI 532261104043710
- D Benson, MDMilwaukee, WI 532261710906185
- Joseph Block, MDMilwaukee, WI 532261316068364
- Joseph Cava, MDMilwaukee, WI 532261528019015
- Raymond Fedderly, MDMilwaukee, WI 532261790736619
- David Friedberg, M.D. S.C.Milwaukee, WI 532261194733345
- Peter Frommelt, MDMilwaukee, WI 532261508817461
- Michele Frommelt, MDMilwaukee, WI 532261114979911
Common questions
What is Peter J. Bartz, M.D.'s NPI number?
Peter J. Bartz, M.D.'s National Provider Identifier (NPI) is 1497728794, issued on Feb 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter J. Bartz, M.D. located?
The NPPES record lists a practice address at 9000 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 266-4762. Providers update this record themselves, so call before visiting.
How can I verify Peter J. Bartz, M.D.'s license?
NPPES lists Wisconsin license number 49026, 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 J. Bartz, M.D. prescribe under Medicare Part D?
In 2024, Peter J. Bartz, M.D. had 209 Medicare Part D claims for 25 beneficiaries; the average among pediatric cardiology physician prescribers was 74. 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.