Benjamin Louis Cahan, M.D.
Radiation Oncology (CMS) · South Pasadena, CA
Shared published services3 shared services · view billing descriptions
66%Service-mix similarity~4.3 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of David I-Feng Hsu, MD with clinicians in the same registry specialty: Radiation Oncology (CMS).
MONTEREY PARK, CA · 10 milesEdit location
Within 10 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 · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Linas J Kazlauskas, MD
Radiation Oncology (CMS) · Glendale, CA
Shared published services3 shared services · view billing descriptions
61%Service-mix similarity~9.0 milesView profile →
Robert P Zimmerman, MD
Radiation Oncology (CMS) · Los Angeles, CA
Shared published services3 shared services · view billing descriptions
57%Service-mix similarity~8.6 milesView profile →
Helen K Chen, MD
Radiation Oncology (CMS) · South Pasadena, CA
Shared published services3 shared services · view billing descriptions
57%Service-mix similarity~4.3 milesView profile →
Richard Jay Li, MD
Radiation Oncology (CMS) · Whittier, CA
Shared published services3 shared services · view billing descriptions
55%Service-mix similarity~7.8 milesView profile →
Jason R. Liu, MD
Radiation Oncology (CMS) · South Pasadena, CA
Shared published services3 shared services · view billing descriptions
55%Service-mix similarity~4.3 milesView profile →
Ramona Kyaw, M.D.
Radiation Oncology (CMS) · Pasadena, CA
Shared published services3 shared services · view billing descriptions
54%Service-mix similarity~6.1 milesView profile →
Jekwon Yeh, MD
Radiation Oncology (CMS) · Glendale, CA
Shared published services3 shared services · view billing descriptions
53%Service-mix similarity~9.4 milesView profile →
Kevin Diao, MD
Radiation Oncology (CMS) · Whittier, CA
Shared published services3 shared services · view billing descriptions
51%Service-mix similarity~6.2 milesView profile →
William S Kurohara, M.D.
Radiation Oncology (CMS) · Whittier, CA
Shared published services3 shared services · view billing descriptions
50%Service-mix similarity~6.2 milesView profile →
David Huang, MD
Radiation Oncology (CMS) · Los Angeles, CA
Shared published services3 shared services · view billing descriptions
50%Service-mix similarity~8.3 milesView profile →
Ruth Williamson, MD
Radiation Oncology (CMS) · Pasadena, CA
Shared published services3 shared services · view billing descriptions
44%Service-mix similarity~6.1 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.