A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of James Michael Walker, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

MILWAUKEE, WI · Exact areaEdit location

2024 published service data · 149 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher L. Klassen, M.D., PH.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
85%Service-mix similarityView profile →

Joshua P Lechusz, D.O.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

Michael Stetz, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

Ruchi Sharma

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
78%Service-mix similarityView profile →

Kaushik S Shahir, M.D

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
78%Service-mix similarityView profile →

Kyle Franklin Brock, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Ariyan Javadi, MD

Diagnostic Radiology · Radiation Oncology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Petar Duvnjak, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Erich Nicholai Mussak

Diagnostic Radiology · Interventional Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
76%Service-mix similarityView profile →

John Cline, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
75%Service-mix similarityView profile →

Jonathan Harvey Stein, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
74%Service-mix similarityView profile →

Michael Marquart, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
74%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.