A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

NEWPORT NEWS, VA · Exact areaEdit location

2024 published service data · 25 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Dennie Thomasson Bartol, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Newport News, VA

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 chest without contrast (71250)
48%Service-mix similarityView profile →

James Donald Baylous, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
44%Service-mix similarityView profile →

Jonathan Daniel Lewis, M.D.

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
42%Service-mix similarityView profile →

Houston Michael Aaron, M.D.

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
40%Service-mix similarityView profile →

Eric D Sturgill, M.D.

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
39%Service-mix similarityView profile →

Daniel Anthony Dolewski, M.D.

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
39%Service-mix similarityView profile →

Hosam Nabil Attaya, M.D.

Diagnostic Radiology (CMS) · Newport News, VA

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 chest without contrast (71250)
38%Service-mix similarityView profile →

Frederick Marshall Wittber, MD

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
38%Service-mix similarityView profile →

Thomas Andrew Pincus, MD

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
38%Service-mix similarityView profile →

Thomas Difato

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
37%Service-mix similarityView profile →

David John Schengber, MD

Diagnostic Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
37%Service-mix similarityView profile →

Adrian Repic, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Newport News, VA

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 chest with contrast (71260)
37%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.