Michael Yu Zhang, M.D., PH.D.
Radiation Oncology (CMS) · Vallejo, CA
Shared published services3 shared services · view billing descriptions
90%Service-mix similarity~19.8 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Winnifred Wong, DO with clinicians in the same registry specialty: Radiation Oncology (CMS).
TRAVIS AFB, 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 · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Christine Sumi Chung, M.D.
Radiation Oncology (CMS) · Pleasant Hill, CA
Shared published services3 shared services · view billing descriptions
89%Service-mix similarity~23.2 milesView profile →
Daniel Marc Chinn, MD
Radiation Oncology (CMS) · Concord, CA
Shared published services3 shared services · view billing descriptions
87%Service-mix similarity~20.8 milesView profile →
Sophia Rahman, M.D.
Radiation Oncology (CMS) · Pleasant Hill, CA
Shared published services3 shared services · view billing descriptions
87%Service-mix similarity~23.2 milesView profile →
Patricia L Seid, MD
Diagnostic Radiology (CMS) · Napa, CA
Shared published services3 shared services · view billing descriptions
87%Service-mix similarity~20.9 milesView profile →
Loan Ngoc Tran, MD
Radiation Oncology (CMS) · Pleasant Hill, CA
Shared published services3 shared services · view billing descriptions
86%Service-mix similarity~23.2 milesView profile →
Bhavani Sankar Gannavarapu, M.D.
Diagnostic Radiology · Radiation Oncology (CMS) · Napa, CA
Shared published services3 shared services · view billing descriptions
85%Service-mix similarity~20.9 milesView profile →
Sravana Kumar Chennupati, MD
Radiation Oncology (CMS) · Pleasant Hill, CA
Shared published services3 shared services · view billing descriptions
83%Service-mix similarity~23.2 milesView profile →
Mariam Philip Korah, MD
Radiation Oncology (CMS) · Antioch, CA
Shared published services3 shared services · view billing descriptions
74%Service-mix similarity~23.2 milesView profile →
Zahora Nicola Ally, MD
Radiation Oncology (CMS) · Antioch, CA
Shared published services3 shared services · view billing descriptions
69%Service-mix similarity~23.2 milesView profile →
Soheila Azghadi, MD
Radiation Oncology (CMS) · Walnut Creek, CA
Shared published services3 shared services · view billing descriptions
68%Service-mix similarity~24.9 milesView profile →
Kuang-Hwa Kenneth Chao, M.D.
Radiation Oncology (CMS) · Walnut Creek, CA
Shared published services3 shared services · view billing descriptions
54%Service-mix similarity~24.9 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.