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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).

LOS ALAMITOS, 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 · 8 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Randy Li-Hung Wei, M.D., PH.D.

Radiation Oncology (CMS) · Long Beach, 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)
81%Service-mix similarity~5.6 milesView profile →

Peyman Kabolizadeh

Radiation Oncology (CMS) · Fountain Valley, 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)
77%Service-mix similarity~9.1 milesView profile →

Usama Mahmood, MD

Radiation Oncology (CMS) · Fountain Valley, 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)
76%Service-mix similarity~9.1 milesView profile →

Alam Nisar Mehdi Syed, M.D.

Radiation Oncology (CMS) · Long Beach, 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)
76%Service-mix similarity~7.4 milesView profile →

Asif R. Harsolia, M.D.

Radiation Oncology (CMS) · Fountain Valley, 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)
74%Service-mix similarity~9.1 milesView profile →

Sayana R Shah, M.D.

Radiation Oncology (CMS) · Long Beach, 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)
63%Service-mix similarity~6.8 milesView profile →

Quoc-Anh Ho, MD

Radiation Oncology (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
  • Design and construction of complex radiation treatment device (77334)
57%Service-mix similarity~9.1 milesView profile →

Regiane Soares De Andrade, M.D.

Radiation Oncology (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
  • Design and construction of complex radiation treatment device (77334)
49%Service-mix similarity~9.1 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.