A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of David Chia-Ont Khan, MD 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.

Victor Eric Chen, MD, MPH

Radiation Oncology (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
92%Service-mix similarityView profile →

May Lin Tao, MD

Radiation Oncology (CMS) · Valencia, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
91%Service-mix similarityView profile →

Austin Benes Hopper, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
89%Service-mix similarityView profile →

Anusha Kalbasi, MD

Radiation Oncology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
89%Service-mix similarityView profile →

Douglas A Kelly, MD

Radiation Oncology (CMS) · Eureka, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
88%Service-mix similarityView profile →

Ann Raldow, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
88%Service-mix similarityView profile →

Luca Faustino Valle, MD

Diagnostic Radiology · Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
88%Service-mix similarityView profile →

Loan Ngoc Tran, MD

Radiation Oncology (CMS) · Pleasant Hill, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
87%Service-mix similarityView profile →

Ramona Kyaw, M.D.

Radiation Oncology (CMS) · Pasadena, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
87%Service-mix similarityView profile →

Sunil Jeram Advani, M.D.

Radiation Oncology (CMS) · La Jolla, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
87%Service-mix similarityView profile →

William W Chou, MD

Radiation Oncology (CMS) · Mission Viejo, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
87%Service-mix similarityView profile →

Tyler Michael Seibert, M.D., PH.D.

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Radiation treatment management, 5 treatment sessions (77427)
87%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.