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Compare the published Medicare service mix of Mark Andrew Healy, MD with clinicians in the same registry specialty: 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.

Trevan Dale Fischer, M.D.

General Surgery (CMS) · Santa Monica, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
68%Service-mix similarityView profile →

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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
68%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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • Removal of cancer skin growth of body, arms, or legs, more than 4.0 cm (11606)
  • Imaging of lymph nodes during surgery (38900)
65%Service-mix similarityView profile →

Richard Essner, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Removal of cancer skin growth of body, arms, or legs, more than 4.0 cm (11606)
61%Service-mix similarityView profile →

Maria Elizabeth Nelson, M.D.

General Surgery · Surgical Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Imaging of lymph nodes during surgery (38900)
60%Service-mix similarityView profile →

Elizabeth Anne Arena, M.D.

General Surgery (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
59%Service-mix similarityView profile →

Louis Rivera, M.D.

General Surgery · Surgical Oncology (CMS) · La Jolla, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Removal of cancer skin growth of body, arms, or legs, more than 4.0 cm (11606)
57%Service-mix similarityView profile →

Giovanni Begossi, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Scott R Karlan, 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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Imaging of lymph nodes during surgery (38900)
57%Service-mix similarityView profile →

James Steven Economou, MD

Surgical Oncology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Removal of cancer skin growth of body, arms, or legs, more than 4.0 cm (11606)
57%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 straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Imaging of lymph nodes during surgery (38900)
56%Service-mix similarityView profile →

Shawn Thomas Steen, MD

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • 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.