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Similar work.
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Compare the published Medicare service mix of Liam Ghiam, MD, MS with clinicians in the same registry specialty: Radiation Oncology (CMS).

CA · Exact areaEdit location

2024 published service data · 449 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John W Lee, MD

Radiation Oncology (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
90%Service-mix similarityView profile →

Rishabh Chaudhari, MD

Radiation Oncology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
89%Service-mix similarityView profile →

Roy Eugene Abendroth, MD

Radiation Oncology (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
88%Service-mix similarityView profile →

Judy M Jackson, M.D.

Radiation Oncology (CMS) · Palm Springs, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
87%Service-mix similarityView profile →

Dhara Ming Macdermed, MD

Radiation Oncology (CMS) · San Mateo, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
87%Service-mix similarityView profile →

James Nelson

Radiation Oncology (CMS) · Redlands, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
86%Service-mix similarityView profile →

Michael N Corradetti, M.D.

Radiation Oncology (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
86%Service-mix similarityView profile →

Lloyd Tomoaki Miyawaki, MD

Radiation Oncology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
86%Service-mix similarityView profile →

Selamawit Negusse, MD

Radiation Oncology (CMS) · Irvine, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
85%Service-mix similarityView profile →

Sravana Kumar Chennupati, MD

Radiation Oncology (CMS) · Pleasant Hill, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
85%Service-mix similarityView profile →

Luis Mariscal, M.D.

Radiation Oncology (CMS) · Bakersfield, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
85%Service-mix similarityView profile →

Patricia L Seid, MD

Diagnostic Radiology (CMS) · Napa, CA

Shared published services
3 shared services · view billing descriptions
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
85%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.