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

RALEIGH, NC · Exact areaEdit location

2024 published service data · 87 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Prashanth Haran, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
74%Service-mix similarityView profile →

Alixandra Scheufler Purakal, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
67%Service-mix similarityView profile →

Tammy Helen Kreuzer, MD

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
66%Service-mix similarityView profile →

Sejal Narendra Patel, MD

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
66%Service-mix similarityView profile →

Tina Eun Sprouse, MD

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
63%Service-mix similarityView profile →

James Dwight Barnwell, MD

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
61%Service-mix similarityView profile →

William James Vanarthos, M.D.

Specialty details in registry · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • X-ray of abdomen, 1 view (74018)
61%Service-mix similarityView profile →

Tedric Dale Boyse, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • X-ray of knee, 3 views (73562)
60%Service-mix similarityView profile →

Brian Jin, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
60%Service-mix similarityView profile →

Vivian Marie Minkemeyer, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
59%Service-mix similarityView profile →

Alan Lee Rosen, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
59%Service-mix similarityView profile →

Julia Kreager Taber, M.D.

Diagnostic Radiology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • X-ray of chest, 2 views (71046)
59%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.