NPPES file of Aug 9, 2026

Benjamin Michael Marsh, M.D.

Urology Physician · Duluth, MN

Benjamin Michael Marsh, M.D. is a urology physician with a practice address in Duluth, Minnesota, and NPI 1689094567, issued on Apr 18, 2014. Check the license (Minnesota 65606, as entered in NPPES) on the Minnesota Board of Medical Practice; 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
1689094567
Name
Benjamin Michael Marsh
Credential
M.D.
Primary taxonomy
Urology Physician 208800000X
License number
65606 MN
Self-reported in NPPES; status is on the state search
Practice location
400 E 3RD St, Duluth, MN 55805
Phone
(218) 786-8364
Enumerated
Apr 18, 2014
Record last updated
Jun 28, 2019 (not updated in 7 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190705000661); accepts Medicare assignment
Medical or professional school
University Of Minnesota Medical School, 2014
Telehealth
Offers telehealth (CMS)
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.
Download card Updates feed

Also registered at 400 E 3RD St

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

  1. Peter Aas, MDHospitalist Physician1063455848
  2. Amina Adil, MDCardiovascular Disease Physician1336482314
  3. Rahul Aggarwal, M.D.Pediatric Critical Care Medicine Physician1336198332
  4. Olubisi Akinseloyin, MDHospitalist Physician1619309010
  5. Glenn Albin, M.DCardiovascular Disease Physician1902851116
  6. David AlexanderDiagnostic Radiology Physician1932135936

Verify Benjamin Michael Marsh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 65606    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 Minnesota 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

31% fewer Medicare Part D claims than the average urology physician in 2024

922 Medicare Part D claims for 268 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 59 claims were for opioids.

  1. Benjamin Marsh922
  2. Specialty average1,340

Most prescribed

  1. Finasteride256 claims
  2. Tamsulosin Hcl241 claims
  3. Oxybutynin Chloride Er181 claims
  4. Hydrocodone-Acetaminophen49 claims
  5. Myrbetriq39 claims
  6. Nitrofurantoin Mono-Macro39 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. The Duluth Clinic LtdVirginia, MN

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

Urology Physician providers in Minnesota

There are 293 urology physician records in Minnesota.

All 293 in Minnesota → Every provider in Duluth →

Other urology physician records in Minnesota

  1. Joseph Acquaye, MDMinneapolis, MN1477907186
  2. Mohamed Ahmed, M.B., B.CH.Rochester, MN1851986236
  3. Joseph Akornor, M.D.Fridley, MN1497731913
  4. Jacob Albersheim, MDSt Louis Park, MN1568950103
  5. Hossein Aliabadi, MDMinneapolis, MN1154366219
  6. James Anderson, MDMinneapolis, MN1093819153
  7. Katherine Anderson, M.D.Rochester, MN1952744526
  8. Stanley Antolak, M.D.Minneapolis, MN1881663169
  9. Ross Avant, M.D.Rochester, MN1801275128
  10. Emma Bacharach, MDEdina, MN1932603024

Common questions

What is Benjamin Michael Marsh, M.D.'s NPI number?

Benjamin Michael Marsh, M.D.'s National Provider Identifier (NPI) is 1689094567, issued on Apr 18, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Benjamin Michael Marsh, M.D. located?

The NPPES record lists a practice address at 400 E 3RD St, Duluth, MN, 55805. Phone: (218) 786-8364. Providers update this record themselves, so call before visiting.

How can I verify Benjamin Michael Marsh, M.D.'s license?

NPPES lists Minnesota license number 65606, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Benjamin Michael Marsh, M.D. prescribe under Medicare Part D?

In 2024, Benjamin Michael Marsh, M.D. had 922 Medicare Part D claims for 268 beneficiaries; the average among urology physician prescribers was 1,340. 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.