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Compare the published Medicare service mix of Shawn Thomas Steen, MD with clinicians in the same registry specialty: General Surgery · Surgical Oncology (CMS).

CA · Exact areaEdit location

2024 published service data · 141 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Farin Amersi, M.D.

General Surgery · Surgical Oncology (CMS) · West Hollywood, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Imaging of lymph nodes during surgery (38900)
68%Service-mix similarityView profile →

Gregory Michael Senofsky, MD

General Surgery · Surgical Oncology (CMS) · Santa Clarita, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Imaging of lymph nodes during surgery (38900)
64%Service-mix similarityView profile →

Cheryl A Ewing, MD

General Surgery · Surgical Oncology (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of lymph nodes during surgery (38900)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
64%Service-mix similarityView profile →

Elizabeth Anne Arena, M.D.

General Surgery (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of lymph nodes during surgery (38900)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
63%Service-mix similarityView profile →

Joel Baumgartner, MD

General Surgery · Surgical Oncology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Imaging of lymph nodes during surgery (38900)
62%Service-mix similarityView profile →

Isaac Paz, MD

General Surgery (CMS) · Duarte, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Imaging of lymph nodes during surgery (38900)
62%Service-mix similarityView profile →

Karen T Lane, MD

General Surgery (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
59%Service-mix similarityView profile →

Aziz Ahmad, M.D.

General Surgery · Surgical Oncology (CMS) · Duarte, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
58%Service-mix similarityView profile →

Trevan Dale Fischer, M.D.

General Surgery (CMS) · Santa Monica, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of lymph nodes during surgery (38900)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
58%Service-mix similarityView profile →

Alexandra Gangi, M.D.

General Surgery · Surgical Oncology (CMS) · West Hollywood, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%Service-mix similarityView profile →

Armando E. Giuliano, MD, FACS, FRCSED

General Surgery · Surgical Oncology (CMS) · West Hollywood, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of lymph nodes during surgery (38900)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
55%Service-mix similarityView profile →

Mark Andrew Healy, MD

Surgical Oncology (CMS) · Salinas, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of lymph nodes during surgery (38900)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
55%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.