Allison Zimmerman
Internal Medicine Physician · Milwaukee, WI
Allison Zimmerman is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1932690245, issued on May 22, 2018. Check the license (Wisconsin 85490, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Allison Zimmerman
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 85490 WI
125.072044 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2900 W Oklahoma Ave, Milwaukee, WI 53215
- Phone
- (414) 646-2438
- Enumerated
- May 22, 2018
- Record last updated
- Feb 17, 2026
- Medicaid ID
- 100367544 WI
- Medicare enrollment
- Enrolled (PECOS I20250813001523); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 2018
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 2900 W Oklahoma Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allison Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 85490Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
155 Medicare Part D claims for 40 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 24% of claims.
Most prescribed
- Rosuvastatin Calcium27 claims
- Atorvastatin Calcium18 claims
- Losartan Potassium17 claims
- Jardiance15 claims
- Metoprolol Succinate13 claims
- Eliquis12 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.
Industry payments in 2024: $134.82
2 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Bills Medicare through one group practice
- Aurora Medical Group, Inc.Milwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allison Zimmerman among 2,078 internal medicine physician records in Wisconsin
Allison Zimmerman is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 79% of them.
- NPI issued2018 · 79% of these records are older, 19% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2018 · median 2002 among the 1,098 with a school on file
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
382 internal medicine physician records list a practice address in Milwaukee
They are 382 of the 18,389 NPPES records with a practice address in Milwaukee, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Milwaukee → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Battiola, M.D.Milwaukee, WI 532151194709964
- Edward Chang, MDMilwaukee, WI 532151669461141
- William Chung, MDMilwaukee, WI 532151598754723
- Maritza Laguna, M.D.Milwaukee, WI 532151417928946
- Don Lee, M.D.Milwaukee, WI 532151336135375
- Marshal Mirviss, M.D.Milwaukee, WI 532151205820958
- Colleen Nichols, M.D.Milwaukee, WI 532151174507933
- Aijaz Noor, M.D.Milwaukee, WI 532151861476624
Common questions
What is Allison Zimmerman's NPI number?
Allison Zimmerman's National Provider Identifier (NPI) is 1932690245, issued on May 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Allison Zimmerman located?
The NPPES record lists a practice address at 2900 W Oklahoma Ave, Milwaukee, WI, 53215. Phone: (414) 646-2438. Providers update this record themselves, so call before visiting.
How can I verify Allison Zimmerman's license?
NPPES lists Wisconsin license number 85490, 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 Allison Zimmerman prescribe under Medicare Part D?
In 2024, Allison Zimmerman had 155 Medicare Part D claims for 40 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.