Benjamin Milzer, DO
Internal Medicine Physician · Milwaukee, WI
Benjamin Milzer, DO is an internal medicine physician with a practice address in Milwaukee, Wisconsin, and NPI 1689429888, issued on Apr 22, 2024. Check the license (Wisconsin 8209421, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Benjamin Milzer
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 8209421 WI
Self-reported in NPPES; status is on the state search - Practice location
- 945 N 12TH St, Milwaukee, WI 53233
- Phone
- (414) 219-7136
- Enumerated
- Apr 22, 2024
- Record last updated
- Jan 27, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 945 N 12TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ola AhmadStudent in an Organized Health Care Education/Training Program1629871645
Verify Benjamin Milzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 8209421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
51 Medicare Part D claims for 18 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of 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.
Benjamin Milzer among 2,078 internal medicine physician records in Wisconsin
Benjamin Milzer, DO 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 2024, is newer than 94% of them.
- NPI issued2024 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- 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
- Ruric (andy) Anderson, MDMilwaukee, WI 532331205995255
- Robin Brown, M.D.Milwaukee, WI 532331881776458
- Carolina Conti, M.D.Milwaukee, WI 532331750340766
- Ellen Danto-Nocton, M.D.Milwaukee, WI 532331265440002
- Mark Gennis, MDMilwaukee, WI 532331164570644
- Thomas Jackson, MDMilwaukee, WI 532331629186242
- Manuel Joseph, MDMilwaukee, WI 532331447391123
- Ariba Khan, MDMilwaukee, WI 532331891802328
Common questions
What is Benjamin Milzer, DO's NPI number?
Benjamin Milzer, DO's National Provider Identifier (NPI) is 1689429888, issued on Apr 22, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Milzer, DO located?
The NPPES record lists a practice address at 945 N 12TH St, Milwaukee, WI, 53233. Phone: (414) 219-7136. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Milzer, DO's license?
NPPES lists Wisconsin license number 8209421, 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 Benjamin Milzer, DO prescribe under Medicare Part D?
In 2024, Benjamin Milzer, DO had 51 Medicare Part D claims for 18 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.