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Compare the published Medicare service mix of Marlin W Causey, M.D. with clinicians in the same registry specialty: General Surgery · Vascular Surgery (CMS).

SAN ANTONIO, TX · Exact areaEdit location

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

Thomas John Gianis, M.D.

Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
71%Service-mix similarityView profile →

Demetrios N Macris, M.D.

Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
66%Service-mix similarityView profile →

Patrick A Hartsell, MD

Cardiac Surgery · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
63%Service-mix similarityView profile →

William Overton Kirk, MD

General Surgery · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
60%Service-mix similarityView profile →

Lois A Fiala, MD

Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
59%Service-mix similarityView profile →

Milad Mohammadi, M.D.

General Surgery · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
53%Service-mix similarityView profile →

Lyssa N Ochoa, MD

General Practice · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
53%Service-mix similarityView profile →

Christine Johnson, MD

Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
52%Service-mix similarityView profile →

Ellis J Salloum, M.D.

Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
52%Service-mix similarityView profile →

Reshma Raj Brahmbhatt, M.D.

General Surgery · Vascular Surgery (CMS) · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
50%Service-mix similarityView profile →

Syed Zulfiqar Hyder Rizvi, M.D.

General Surgery · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
49%Service-mix similarityView profile →

Grady Dee Alsabrook, M.D.

General Surgery · Vascular Surgery (CMS) · San Antonio, TX

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)
  • Ultrasound of one leg arteries or artery grafts (93926)
  • Ultrasound study of arm and leg arteries (93922)
49%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.