NPPES file of Aug 9, 2026

Margret Levin Lenarz, M.D.

Family Medicine Physician · Hillsboro, WI

Margret Levin Lenarz, M.D. is a family medicine physician with a practice address in Hillsboro, Wisconsin, and NPI 1033290861, issued on Oct 18, 2006. Check the license (Wisconsin 66505, 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
1033290861
Name
Margret Levin Lenarz
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
66505 WI
39820 MN
Self-reported in NPPES; status is on the state search
Practice location
400 Water Ave, Hillsboro, WI 54634
Phone
(608) 489-8000
Enumerated
Oct 18, 2006
Record last updated
Nov 10, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20170113002628); may accept Medicare assignment
Medical or professional school
University Of Minnesota Medical School, 1996
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 400 Water Ave

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

  1. Andrea Anderson, PA-CPhysician Assistant1194957928
  2. Carrie Brilowski, APNPAdult Health Nurse Practitioner1346039153
  3. Christina Brooks, MSW APSWSocial Worker1336548163
  4. William Cooke, M.D.Family Medicine Physician1245221936
  5. Christine Dean, LCSWClinical Social Worker1487037826
  6. Toni Degner, LMTMassage Therapist1407709157

Verify Margret Levin Lenarz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 66505
    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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95% fewer Medicare Part D claims than the average family medicine physician in 2024

181 Medicare Part D claims for 49 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.

  1. Margret Lenarz181
  2. Specialty average3,544

Most prescribed

  1. Escitalopram Oxalate13 claims
  2. Pravastatin Sodium12 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.

Margret Levin Lenarz among 3,765 family medicine physician records in Wisconsin

Margret Levin Lenarz, M.D. 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 2006, is newer than 10% of them.

  • NPI issued2006 · 10% of these records are older, 46% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated1996 · median 2007 among the 2,347 with a school on file
  • Record last updated2020 · 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).

10 family medicine physician records list a practice address in Hillsboro

They are 10 of the 65 NPPES records with a practice address in Hillsboro, and 3,765 family medicine physician records in Wisconsin.

The 8 family medicine physician records with the nearest ZIP codes

  1. William Cooke, M.D.Hillsboro, WI 546341245221936
  2. Lerose Dhanoa, MDHillsboro, WI 546341922310333
  3. Katherine Edsall, MDHillsboro, WI 546341063091445
  4. Zachary MeyerHillsboro, WI 546341578050209
  5. Katherine O'Rourke, DOHillsboro, WI 546341316900541
  6. Thomas Resan, MDHillsboro, WI 546341558363515
  7. Danielle Shapiro, MDHillsboro, WI 546341760686406
  8. Richard Shoskey, M.D.Hillsboro, WI 546341376805903

Common questions

What is Margret Levin Lenarz, M.D.'s NPI number?

Margret Levin Lenarz, M.D.'s National Provider Identifier (NPI) is 1033290861, issued on Oct 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Margret Levin Lenarz, M.D. located?

The NPPES record lists a practice address at 400 Water Ave, Hillsboro, WI, 54634. Phone: (608) 489-8000. Providers update this record themselves, so call before visiting.

How can I verify Margret Levin Lenarz, M.D.'s license?

NPPES lists Wisconsin license number 66505, 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 Margret Levin Lenarz, M.D. prescribe under Medicare Part D?

In 2024, Margret Levin Lenarz, M.D. had 181 Medicare Part D claims for 49 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.