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Compare the published Medicare service mix of Mark Joseph Ajalat with clinicians in the same registry specialty: Vascular Surgery (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 35 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jesus Gildardo Ulloa, M.D.

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Management of oxygen chamber therapy (99183)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
63%Service-mix similarityView profile →

David Tobey, D.O.

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Management of oxygen chamber therapy (99183)
63%Service-mix similarityView profile →

Juan Carlos Jimenez, MD

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Management of oxygen chamber therapy (99183)
46%Service-mix similarityView profile →

Johnathon Curtis Rollo, MD

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Management of oxygen chamber therapy (99183)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
30%Service-mix similarityView profile →

Steven M. Farley, MD

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Management of oxygen chamber therapy (99183)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
29%Service-mix similarityView profile →

Vincent Lopez Rowe, MD

General Surgery · Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
18%Service-mix similarityView profile →

Willis H. Wagner, M.D.

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
15%Service-mix similarityView profile →

Sally A Schonefeld, M.D.

General Surgery · Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
12%Service-mix similarityView profile →

Bernardo Curi Mendes, MD

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
11%Service-mix similarityView profile →

Elizabeth L Chou, MD

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
10%Service-mix similarityView profile →

Miguel Francisco Manzur, M.D.

General Surgery · Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
9%Service-mix similarityView profile →

Siamak Barkhordarian, M.D.

Diagnostic Radiology · General Surgery · Interventional Radiology · Peripheral Vascular Disease · Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
8%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.