A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Nicholas G Stephani, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

WI · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Roger Axtell, M.D.

Diagnostic Radiology (CMS) · New Berlin, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
94%Service-mix similarityView profile →

Steven Michael Gryniewicz, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
93%Service-mix similarityView profile →

Sara L Madsen, DO

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
89%Service-mix similarityView profile →

Bradley Ferguson, MD

Diagnostic Radiology (CMS) · Menomonee Falls, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
87%Service-mix similarityView profile →

Molly Peterson

Diagnostic Radiology (CMS) · St Francis, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
87%Service-mix similarityView profile →

David Morgan Roelke, M.D.

Diagnostic Radiology (CMS) · Waukesha, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
87%Service-mix similarityView profile →

Katherine Ann Hallenbeck, MD

Diagnostic Radiology (CMS) · St Francis, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
87%Service-mix similarityView profile →

Kathleen Ann Senebouttarath, M.D.

Diagnostic Radiology (CMS) · St Francis, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
86%Service-mix similarityView profile →

Bora Ozel, M D

Diagnostic Radiology (CMS) · Madison, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
85%Service-mix similarityView profile →

Jill A Hammersley, M.D.

Diagnostic Radiology (CMS) · Burlington, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
85%Service-mix similarityView profile →

Christopher Canitz, MD

Diagnostic Radiology (CMS) · Brookfield, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
85%Service-mix similarityView profile →

Christopher J. Zellmer, M.D.

Diagnostic Radiology (CMS) · St Francis, WI

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Screening 3d breast mammography (77063)
85%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.