Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

James Mahn

Individual provider Diagnostic Radiology Physician · NPI 1891114716

James Mahn practises Diagnostic Radiology in Grosse Pointe, Michigan. Graduated from Wayne State University School of Medicine in 2014, 12 years ago. Practices with Beaumont Medical Group Hospital Based Services, a 572-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
12
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2014
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Practice location Address checks out

468 Cadieux Rd
Grosse Pointe, MI 48230-1507
Phone: (313) 473-1833
Fax: (313) 473-6916
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 36555 26 Mile Rd Ste 1400, Lenox, MI 48048-3186 — (947) 523-4020
  • 36555 26 Mile Rd Ste 3000, Lenox, MI 48048-3185 — (947) 523-4040
  • 3601 W 13 Mile Rd, Royal Oak, MI 48073-6712 — (248) 898-6509
  • 44201 Dequindre Rd, Troy, MI 48085-1117 — (248) 964-5190

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 4301500480 (MI)

Record details

NPI number1891114716
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 8, 2014
Last updated in NPPESJuly 28, 2022
Certification dateJuly 28, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2014 (12 years in practice)
Group practice Beaumont Medical Group Hospital Based Services — 572 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Varicose vein removal 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients771
Services billed 1,146 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $323 9 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Beaumont Medical Group Hospital Based Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 572 clinicians in the practice; 12 are shown here.

Other providers in Grosse Pointe