NPPES file of Aug 9, 2026

Margaret L. Schwarze, MD

Vascular Surgery Physician · Madison, WI

Margaret L. Schwarze, MD is a vascular surgery physician with a practice address in Madison, Wisconsin, and NPI 1639136443, issued on Apr 26, 2006. Check the license (Wisconsin 48223, as entered in NPPES) on the Wisconsin Medical Examining Board; 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
1639136443
Name
Margaret L. Schwarze
Credential
MD
Primary taxonomy
Vascular Surgery Physician 2086S0129X
License number
48223 WI
Self-reported in NPPES; status is on the state search
Practice location
1 South Park St, Madison, WI 53715
Phone
(608) 287-2100
Enumerated
Apr 26, 2006
Record last updated
Jan 22, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(608) 265-5755
Medicare enrollment
Enrolled (PECOS I20050801000976); accepts Medicare assignment
Medical or professional school
Harvard Medical School, 1995
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1 South Park St

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

  1. Michael Garren, MDSurgery Physician1013971662
  2. John Juozevicius, MDRheumatology Physician1346201241
  3. Richard Sauer, MS CCC AAudiologist1285698852

Verify Margaret L. Schwarze in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 48223
    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
Open the Wisconsin license search

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94% fewer Medicare Part D claims than the average vascular surgery physician in 2024

12 Medicare Part D claims, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.

  1. Margaret Schwarze12
  2. Specialty average201

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

  1. University OF Wisconsin Medical Foundation IncMadison, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Vascular Surgery Physician providers in Wisconsin

There are 90 vascular surgery physician records in Wisconsin.

Other vascular surgery physician records in Wisconsin

  1. Charles Acher, MDMadison, WI1679537211
  2. Ayman Ahmed, MDMarshfield, WI1275811200
  3. Natasha Ahuja, MDGreen Bay, WI1689107013
  4. Shahriar Alizadegan, M.DMilwaukee, WI1063647857
  5. Javariah Asghar, M.D.Marshfield, WI1467688804
  6. Jordan Baker, MDMadison, WI1750166955
  7. Robert Ballard, MDAppleton, WI1902898182
  8. Kyla Bennett, M.D.Madison, WI1881851848
  9. Jack BontekoeMadison, WI1568081578
  10. Clark Boren, MDAppleton, WI1265424410

Common questions

What is Margaret L. Schwarze, MD's NPI number?

Margaret L. Schwarze, MD's National Provider Identifier (NPI) is 1639136443, issued on Apr 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Margaret L. Schwarze, MD located?

The NPPES record lists a practice address at 1 South Park St, Madison, WI, 53715. Phone: (608) 287-2100. Providers update this record themselves, so call before visiting.

How can I verify Margaret L. Schwarze, MD's license?

NPPES lists Wisconsin license number 48223, 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 Margaret L. Schwarze, MD prescribe under Medicare Part D?

In 2024, Margaret L. Schwarze, MD had 12 Medicare Part D claims; the average among vascular surgery physician prescribers was 201. 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.