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Compare the published Medicare service mix of Christopher Daniel Maroules, M.D. with clinicians in the same registry specialty: Diagnostic Radiology · Internal Medicine (CMS).

ROANOKE, VA · Exact areaEdit location

2024 published service data · 44 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael S Chung, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels and grafts of heart with contrast (75574)
  • Analysis of data from ct study of heart blood vessels to assess severity of heart artery disease, with interpretation and report (75580)
  • Ct scan of blood vessels of chest with contrast (71275)
78%Service-mix similarityView profile →

Kent Michael Hall, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels and grafts of heart with contrast (75574)
  • Analysis of data from ct study of heart blood vessels to assess severity of heart artery disease, with interpretation and report (75580)
  • Ct scan of blood vessels of chest with contrast (71275)
75%Service-mix similarityView profile →

Michael A Brooks, MD

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels and grafts of heart with contrast (75574)
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
59%Service-mix similarityView profile →

Daniel Roberts Karolyi, M.D., PH.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels and grafts of heart with contrast (75574)
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
51%Service-mix similarityView profile →

Francine Lee Jacobson, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of chest with contrast (71260)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
42%Service-mix similarityView profile →

Christopher Joseph Steel, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
2 shared services · view billing descriptions
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
40%Service-mix similarityView profile →

Daniel W. Schepens, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of chest with contrast (71260)
38%Service-mix similarityView profile →

Fielding Carter Fitzpatrick, DO

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of chest with contrast (71260)
37%Service-mix similarityView profile →

Michael John Kelley, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of chest with contrast (71260)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
36%Service-mix similarityView profile →

Joseph Arlan Birkman, D.O.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of chest with contrast (71260)
35%Service-mix similarityView profile →

Ira G. Shaywitz, M.D.

Diagnostic Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels and grafts of heart with contrast (75574)
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
32%Service-mix similarityView profile →

Alfred T Shilling, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Roanoke, VA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of chest with contrast (71260)
31%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.