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Compare the published Medicare service mix of Albert James Chang, MD PHD with clinicians in the same registry specialty: Radiation Oncology (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 38 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Alan Lee, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
81%Service-mix similarityView profile →

Puja Venkat, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
78%Service-mix similarityView profile →

Andrew Seung-Min Lim, MD, BSC

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
64%Service-mix similarityView profile →

Michael Lee Steinberg, MD

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Complex radiation therapy planning (77263)
63%Service-mix similarityView profile →

John Vidyadhar Hegde, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
62%Service-mix similarityView profile →

David Huang, MD

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
61%Service-mix similarityView profile →

Lauren A. Lukas, MD

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
61%Service-mix similarityView profile →

Amar Upadhyaya Kishan, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved (77290)
59%Service-mix similarityView profile →

David Sup Hong, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
58%Service-mix similarityView profile →

Jennifer Ho, MD

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
58%Service-mix similarityView profile →

Michael Xiang

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
57%Service-mix similarityView profile →

Diane Chushin Ling, M.D.

Radiation Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Design and construction of complex radiation treatment device (77334)
  • 3d radiation therapy planning (77295)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
56%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.