A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Steven Anthony Siwik, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

TUCSON, AZ · Exact areaEdit location

2024 published service data · 129 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Shaun Patrick Mcmanimon, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
92%Service-mix similarityView profile →

Jason Hanley

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
89%Service-mix similarityView profile →

Matthew Edward Vanasco, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
80%Service-mix similarityView profile →

Donald Joseph Roach, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
  • Ct scan of blood vessels of chest with contrast (71275)
76%Service-mix similarityView profile →

Michael Richard Baker, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
70%Service-mix similarityView profile →

Julie Marie Zaetta, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
69%Service-mix similarityView profile →

Gaurav Anand, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
69%Service-mix similarityView profile →

Thomas A Stejskal, MD

Interventional Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
  • Ct scan of blood vessels of chest with contrast (71275)
68%Service-mix similarityView profile →

William G Berger, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
  • Ct scan of blood vessels of chest with contrast (71275)
68%Service-mix similarityView profile →

Emi Masuda, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
68%Service-mix similarityView profile →

Richard Ralph Boyle, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
67%Service-mix similarityView profile →

Seung Hyun Hur, MD

Diagnostic Radiology (CMS) · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ct scan of chest without contrast (71250)
67%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.