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Compare the published Medicare service mix of Evan Andrew Harrison with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 62 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Marcelo Straus Takahashi, M.D.

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
87%Service-mix similarityView profile →

William Hyslop, MD

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
56%Service-mix similarityView profile →

Kristen Olinger

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
55%Service-mix similarityView profile →

Lauren Marie Brubaker Burke, MD

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
54%Service-mix similarityView profile →

Samuel Gilbert Ostrum, MD

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
44%Service-mix similarityView profile →

Brett Hausauer

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
41%Service-mix similarityView profile →

Elena Camelia Antonescu, D.O.

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
39%Service-mix similarityView profile →

Chockeo Syvanthong, M.D.

Diagnostic Radiology · General Practice (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
34%Service-mix similarityView profile →

Naiim Salim Ali, M.D.

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
33%Service-mix similarityView profile →

Eli Craven Tate, M.D.

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
33%Service-mix similarityView profile →

Mariana Regina Defreitas, MD

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
32%Service-mix similarityView profile →

Nicolas Vassel, DO

Diagnostic Radiology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • X-ray of abdomen, 1 view (74018)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
32%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.