Zahora Nicola Ally, MD
Radiation Oncology (CMS) · Antioch, CA
Shared published services3 shared services · view billing descriptions
88%Service-mix similarity~19.0 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Gautam Prasad, M.D. with clinicians in the same registry specialty: Radiation Oncology (CMS).
DUBLIN, CA · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance
Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works
2024 published service data · 56 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Mariam Philip Korah, MD
Radiation Oncology (CMS) · Antioch, CA
Shared published services3 shared services · view billing descriptions
83%Service-mix similarity~19.0 milesView profile →
Gopal Sachdeva, MD
Radiation Oncology (CMS) · Emeryville, CA
Shared published services3 shared services · view billing descriptions
79%Service-mix similarity~21.2 milesView profile →
Soheila Azghadi, MD
Radiation Oncology (CMS) · Walnut Creek, CA
Shared published services3 shared services · view billing descriptions
78%Service-mix similarity~15.1 milesView profile →
Nicholas Trakul, MD, PHD
Radiation Oncology (CMS) · Stanford, CA
Shared published services3 shared services · view billing descriptions
75%Service-mix similarity~24.1 milesView profile →
Sandra Shaker Zaky, MD
Radiation Oncology (CMS) · Stanford, CA
Shared published services3 shared services · view billing descriptions
73%Service-mix similarity~24.1 milesView profile →
Daniel Carl Schiffner, M.D.
Radiation Oncology (CMS) · Palo Alto, CA
Shared published services3 shared services · view billing descriptions
71%Service-mix similarity~22.6 milesView profile →
Sharon Dutton, M.D.
Radiation Oncology (CMS) · Sunnyvale, CA
Shared published services3 shared services · view billing descriptions
69%Service-mix similarity~24.2 milesView profile →
Robert Lundahl, MD
Radiation Oncology (CMS) · Palo Alto, CA
Shared published services3 shared services · view billing descriptions
68%Service-mix similarity~22.6 milesView profile →
Robert Niteen Sinha, MD
Radiation Oncology (CMS) · Mountain View, CA
Shared published services3 shared services · view billing descriptions
67%Service-mix similarity~24.6 milesView profile →
Andrew Philip Martella, M.D.
Radiation Oncology (CMS) · Stanford, CA
Shared published services3 shared services · view billing descriptions
66%Service-mix similarity~24.1 milesView profile →
Daniel Marc Chinn, MD
Radiation Oncology (CMS) · Concord, CA
Shared published services3 shared services · view billing descriptions
65%Service-mix similarity~19.4 milesView 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 approximate distance 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.