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Compare the published Medicare service mix of David I-Feng Hsu, 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.

Robert Patrick Lum, M.D.

Radiation Oncology (CMS) · Oxnard, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • High dose rate electronic brachytherapy, external (0394T)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
85%Service-mix similarityView profile →

Carolyn Joy Barnes, M.D.

Radiation Oncology (CMS) · Rancho Mirage, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • 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)
72%Service-mix similarityView profile →

Yuchi Peter Peng, MD

Radiation Oncology (CMS) · Palmdale, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
71%Service-mix similarityView profile →

Dan Vongtama, M.D.

Radiation Oncology (CMS) · Stockton, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
71%Service-mix similarityView profile →

Stephen W Doggett, M.D.

Radiation Oncology (CMS) · Newport Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • High dose rate electronic brachytherapy, external (0394T)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
70%Service-mix similarityView profile →

John Benjamin Wilkinson, M.D.

Radiation Oncology (CMS) · Lompoc, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
69%Service-mix similarityView profile →

Yuji Seo, M.D.

Radiation Oncology (CMS) · El Centro, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
69%Service-mix similarityView profile →

Jonathan Vanwickle, MD

Radiation Oncology (CMS) · Santa Maria, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
69%Service-mix similarityView profile →

Sharon Dutton, M.D.

Radiation Oncology (CMS) · Sunnyvale, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
68%Service-mix similarityView profile →

Jeffrey M Rodnick, MD

Radiation Oncology (CMS) · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
68%Service-mix similarityView profile →

Lesley Lawrenson, M.D., PH.D.

Radiation Oncology (CMS) · Lawndale, CA

Shared published services
3 shared services · view billing descriptions
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • 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)
68%Service-mix similarityView profile →

Paul Noble Page, MD

Radiation Oncology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Obtaining data needed to develop the optimal radiation treatment, 1 treatment area (77280)
  • Intensity modulated treatment delivery, single or multiple fields/arcs,via narrow spatially and temporally modulated beams, binary, dynamic mlc, per treatment session (G6015)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
67%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.