NPPES file of Aug 9, 2026

John Joseph Trimberger, M.D.

Geriatric Medicine (Family Medicine) Physician · Milwaukee, WI

John Joseph Trimberger, M.D. is a geriatric medicine (family medicine) physician with a practice address in Milwaukee, Wisconsin, and NPI 1649616335, issued on May 21, 2013. Check the license (Wisconsin 67617, 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
1649616335
Name
John Joseph Trimberger
Credential
M.D.
Primary taxonomy
Geriatric Medicine (Family Medicine) Physician 207QG0300X
License number
67617 WI
Self-reported in NPPES; status is on the state search
Practice location
2906 S 20TH St, Milwaukee, WI 53215
Phone
(414) 672-1353
Enumerated
May 21, 2013
Record last updated
Jul 10, 2017 (not updated in 9 years: call before relying on the address or phone)
Fax
(414) 672-4265
Medicaid ID
1649616335 WI
Medicare enrollment
Enrolled (PECOS I20151201001810); accepts Medicare assignment
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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8 nearest geriatric medicine (family medicine) physician records → All 17 in Wisconsin → Look up another NPI →

Also registered at 2906 S 20TH St

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

  1. Flavia Adashek, MDPediatrics Physician1902555170
  2. Alexandra Alberda, CNMAdvanced Practice Midwife1316943715
  3. Sol Del Mar Aldrete Audiffred, M.D.Infectious Disease Physician1396059838
  4. Sharais Alvarado Pacheco, LPCProfessional Counselor1720640329
  5. Ann Marie Amaya, CNMAdvanced Practice Midwife1720043300
  6. Marystella AnidiPhysician Assistant1609509157

Verify John Joseph Trimberger in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWisconsin Medical Examining Board
    Search for license 67617    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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20% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024

4,199 Medicare Part D claims for 245 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 50 claims were for opioids.

  1. John Trimberger4,199
  2. Specialty average5,222

Most prescribed

  1. Atorvastatin Calcium248 claims
  2. Metformin Hcl225 claims
  3. Lisinopril191 claims
  4. Amlodipine Besylate174 claims
  5. Omeprazole156 claims
  6. Jardiance147 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.

Bills Medicare through one group practice

  1. 16TH Street Community Health Center Inc.Milwaukee, WI

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

John Joseph Trimberger among 17 geriatric medicine (family medicine) physician records in Wisconsin

John Joseph Trimberger, M.D. is one of 17 geriatric medicine (family medicine) physician records with a practice address in Wisconsin. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 59% of them.

  • NPI issued2013 · 59% of these records are older, 29% newer
  • In a Medicare fileYes · 65% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2013 · median 2013 among the 10 with a school on file
  • Record last updated2017 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QG0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Geriatric Medicine (Family Medicine) Physician providers in Wisconsin

There are 17 geriatric medicine (family medicine) physician records in Wisconsin.

All 17 in Wisconsin → Every provider in Milwaukee → Geriatric Medicine (Family Medicine) Physician nationwide →

The 8 geriatric medicine (family medicine) physician records with the nearest ZIP codes

  1. Jean FrizzellWest Bend, WI 530951871675603
  2. Monica Stout, M.D.Hartford, WI 530271922493576
  3. Arthur Altbuch, M.D.Janesville, WI 535461821021429
  4. David Rebedew, MDMonroe, WI 535661184966509
  5. Melissa Ricker-Bouche, MDSun Prairie, WI 535901184253775
  6. Irene Hamrick, MDFitchburg, WI 537111801888623
  7. Sarwat Jabeen, M.D.Marinette, WI 541431710186705
  8. Tracy Sherman, M.D.Two Rivers, WI 542411437373586

Common questions

What is John Joseph Trimberger, M.D.'s NPI number?

John Joseph Trimberger, M.D.'s National Provider Identifier (NPI) is 1649616335, issued on May 21, 2013. An NPI identifies a provider in billing; it is not a license.

Where is John Joseph Trimberger, M.D. located?

The NPPES record lists a practice address at 2906 S 20TH St, Milwaukee, WI, 53215. Phone: (414) 672-1353. Providers update this record themselves, so call before visiting.

How can I verify John Joseph Trimberger, M.D.'s license?

NPPES lists Wisconsin license number 67617, 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 John Joseph Trimberger, M.D. prescribe under Medicare Part D?

In 2024, John Joseph Trimberger, M.D. had 4,199 Medicare Part D claims for 245 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.