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

SANTA BARBARA, CA · Exact areaEdit location

2024 published service data · 49 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Antonio Granados Alvarez, M.D.

Specialty details in registry · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Mri scan of abdomen before and after contrast (74183)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
56%Service-mix similarityView profile →

Kenneth Robert Daughters, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Mri scan of abdomen before and after contrast (74183)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
53%Service-mix similarityView profile →

Keval Patel, DO

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of chest with contrast (71275)
  • Ct scan of abdomen and pelvis without contrast (74176)
52%Service-mix similarityView profile →

Christopher Douglas Kuzminski, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Mri scan of abdomen before and after contrast (74183)
  • Ct scan of blood vessels of chest with contrast (71275)
51%Service-mix similarityView profile →

Manu Singh, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
50%Service-mix similarityView profile →

Thomas C. Daughters, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
49%Service-mix similarityView profile →

Jonathan Patrick Coll, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
49%Service-mix similarityView profile →

Daniel T Fox, MD

Diagnostic Radiology · Radiation Oncology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Mri scan of abdomen before and after contrast (74183)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
48%Service-mix similarityView profile →

David John Mills, MD

Specialty details in registry · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • X-ray of chest, 1 view (71045)
48%Service-mix similarityView profile →

Steven Hartzman, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
47%Service-mix similarityView profile →

Robert Christian Maciel, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
47%Service-mix similarityView profile →

Bernard Chow, M.D.

Diagnostic Radiology (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of blood vessels of abdomen and pelvis with contrast (74174)
  • Ct scan of blood vessels of chest with contrast (71275)
47%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.