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

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 383 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Douglas Henderson Brown, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
81%Service-mix similarityView profile →

Vanja Varenika, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
78%Service-mix similarityView profile →

Austin Marsh

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
75%Service-mix similarityView profile →

Ashwin Vasudev Prabhu, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
62%Service-mix similarityView profile →

Saeed Dianat, M.D.

Specialty details in registry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
60%Service-mix similarityView profile →

Alan A Alexander, MD

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
51%Service-mix similarityView profile →

John Vernon Crues, M.D

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
51%Service-mix similarityView profile →

Aaron Schein, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
51%Service-mix similarityView profile →

Richard Chad Arigo, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
51%Service-mix similarityView profile →

Eric Chen, MD

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
42%Service-mix similarityView profile →

Robert Martin Reuter, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
41%Service-mix similarityView profile →

Fatemeh Abdollahi Mofakham, MD

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of leg joint without contrast (73721)
  • Mri scan of arm joint without contrast (73221)
  • Mri scan of leg without contrast (73718)
39%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.