Gretchen Mary Zirbel, MD
Dermatology Physician · Brookfield, WI
Gretchen Mary Zirbel, MD is a dermatology physician with a practice address in Brookfield, Wisconsin, and NPI 1588658371, issued on Sep 7, 2005. Check the license (Wisconsin 32404020, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gretchen Mary Zirbel
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 32404020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 13800 W North Ave, Brookfield, WI 53005
- Phone
- (262) 754-4488
- Enumerated
- Sep 7, 2005
- Record last updated
- Apr 20, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (262) 754-4940
- Medicaid ID
- 32010100 WI
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 325 in Wisconsin → Look up another NPI →
Also registered at 13800 W North Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kenneth Grizzle, PHDClinical Child & Adolescent Psychologist1912958737
- Kristina Kleven, MDDermatology Physician1518950153
Verify Gretchen Mary Zirbel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 32404020Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average dermatology physician in 2024
913 Medicare Part D claims for 369 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Ketoconazole97 claims
- Triamcinolone Acetonide95 claims
- Clobetasol Propionate81 claims
- Hydrocortisone73 claims
- Metronidazole54 claims
- Betamethasone Diprop Augmented53 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $199.98
2 payments; by number, the most common kind was education; the largest payer was Janssen Biotech, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Gretchen Mary Zirbel among 325 dermatology physician records in Wisconsin
Gretchen Mary Zirbel, MD is one of 325 dermatology physician records with a practice address in Wisconsin. 82% 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 · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2008 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Wisconsin
There are 325 dermatology physician records in Wisconsin.
All 325 in Wisconsin → Every provider in Brookfield → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- John Cantieri, MDBrookfield, WI 530051952376808
- Manish Gharia, MDBrookfield, WI 530051376565267
- Kristina Kleven, MDBrookfield, WI 530051518950153
- Mandi Maronn, MDBrookfield, WI 530051619046026
- Mareshia MotarjemeBrookfield, WI 530051992881361
- Marie Nakata, MDBrookfield, WI 530051962477836
- Leah Nelson, PABrookfield, WI 530051912239658
- Sun Young Ruggeri, MDBrookfield, WI 530051427121979
Common questions
What is Gretchen Mary Zirbel, MD's NPI number?
Gretchen Mary Zirbel, MD's National Provider Identifier (NPI) is 1588658371, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gretchen Mary Zirbel, MD located?
The NPPES record lists a practice address at 13800 W North Ave, Brookfield, WI, 53005. Phone: (262) 754-4488. Providers update this record themselves, so call before visiting.
How can I verify Gretchen Mary Zirbel, MD's license?
NPPES lists Wisconsin license number 32404020, 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 Gretchen Mary Zirbel, MD prescribe under Medicare Part D?
In 2024, Gretchen Mary Zirbel, MD had 913 Medicare Part D claims for 369 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Gretchen Mary Zirbel, MD's MIPS final score?
The 2023 MIPS final score is 87.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.