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Compare the published Medicare service mix of Stephen Russell Vossler, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

GRAND RAPIDS, MI · Exact areaEdit location

2024 published service data · 183 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Emmanuel Javier Reyes-Salavarria, M.D.

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
94%Service-mix similarityView profile →

Jeffrey J Knake, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
82%Service-mix similarityView profile →

Robert Oostveen, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
80%Service-mix similarityView profile →

Lucas Michael Sheldon, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
64%Service-mix similarityView profile →

Gopi K Nallani, M.D.

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
64%Service-mix similarityView profile →

Maryam Soltanolkotabi, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
60%Service-mix similarityView profile →

Thomas A Manning, M.D.

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • X-ray of hip, 2-3 views (73502)
  • X-ray of foot, minimum of 3 views (73630)
  • X-ray of shoulder, minimum of 2 views (73030)
57%Service-mix similarityView profile →

Nicole Kapral, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
53%Service-mix similarityView profile →

Alexander Serra, MD

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
53%Service-mix similarityView profile →

James Jason Morrison, M.D.

Interventional Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • X-ray of hip, 2-3 views (73502)
  • X-ray of foot, minimum of 3 views (73630)
  • X-ray of shoulder, minimum of 2 views (73030)
50%Service-mix similarityView profile →

Stuart Vollmer, M.D.

Diagnostic Radiology (CMS) · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Ct scan of leg without contrast (73700)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg joint without contrast (73721)
49%Service-mix similarityView profile →

George Ascherl, M.D.

Specialty details in registry · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • X-ray of hip, 2-3 views (73502)
  • X-ray of foot, minimum of 3 views (73630)
  • X-ray of shoulder, minimum of 2 views (73030)
49%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.