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

APTOS, CA · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 6 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Bradley B. Hill, MD

General Surgery · Vascular Surgery (CMS) · Campbell, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes (99153)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
67%Service-mix similarity~21.1 milesView profile →

Abid Christopher Mogannam, M.D., M.B.A.

General Surgery · Vascular Surgery (CMS) · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Use of a drug to induce depression of consciousness by physician performing a procedure, each additional 15 minutes (99153)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
60%Service-mix similarity~19.2 milesView profile →

Valy Boulom, M.D.

Vascular Surgery (CMS) · Morgan Hill, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
47%Service-mix similarity~17.2 milesView profile →

Ruby Chuan Lo, M.D.

Vascular Surgery (CMS) · Campbell, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Ultrasonic guidance for blood vessel access (76937)
42%Service-mix similarity~21.1 milesView profile →

Jeffrey Kaplan, MD

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

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
40%Service-mix similarity~18.4 milesView profile →

David W Chang, MD

Interventional Radiology · Peripheral Vascular Disease · Vascular Surgery (CMS) · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm or leg veins with compression and maneuvers (93970)
  • Ultrasound of leg arteries or artery grafts (93925)
  • Ultrasound of hemodialysis access (93990)
23%Service-mix similarity~19.2 milesView 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 approximate distance 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.