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Compare the published Medicare service mix of Andrew Luke Chang, M.D. with clinicians in the same registry specialty: Hospice/Palliative Care · Radiation Oncology (CMS).

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian Chou, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Complex proton beam radiation treatment (77525)
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
86%Service-mix similarityView profile →

Iain Jacob Macewan, M.D.

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Complex proton beam radiation treatment (77525)
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
70%Service-mix similarityView profile →

Jehee Isabelle Choi, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Complex proton beam radiation treatment (77525)
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
69%Service-mix similarityView profile →

Carl Rossi, M.D.

Radiation Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Complex proton beam radiation treatment (77525)
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
67%Service-mix similarityView profile →

Asona Juwan Lui, MD, PHD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
40%Service-mix similarityView profile →

Christopher Andrew Straka, M.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)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Continuing radiation therapy consultation per week (77336)
32%Service-mix similarityView profile →

Karen E Tye, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
32%Service-mix similarityView profile →

Jyoti Mayadev, M.D

Radiation Oncology (CMS) · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
30%Service-mix similarityView profile →

Chika Rebecca Nwachukwu, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
29%Service-mix similarityView profile →

Parag Rohit Sanghvi, M.D., M..S.P.H.

Radiation Oncology (CMS) · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
29%Service-mix similarityView profile →

Bradley Robert Prestidge, MD

Radiation Oncology (CMS) · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
28%Service-mix similarityView profile →

Andrew Sharabi, M.D., PH.D.

Radiation Oncology (CMS) · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
28%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.