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Compare the published Medicare service mix of Ahmad Syed Hussain, M.D. with clinicians in the same registry specialty: Vascular Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 333 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher Julian Marrocco, MD

Vascular Surgery (CMS) · Lynwood, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
57%Service-mix similarityView profile →

Andrew Nimmich, M.D.

Vascular Surgery (CMS) · Napa, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Removal of plaque in arteries of leg (37225)
50%Service-mix similarityView profile →

Sergio Guillermo Casillas Berumen, M.D.

General Surgery (CMS) · Chula Vista, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
49%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
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
48%Service-mix similarityView profile →

Christopher Shawn Skillern, MD

Vascular Surgery (CMS) · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
48%Service-mix similarityView profile →

Bradley B. Hill, MD

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

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
48%Service-mix similarityView profile →

Li Sheng Kong, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
47%Service-mix similarityView profile →

Allan W. Tulloch, M.D.

Vascular Surgery (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
46%Service-mix similarityView profile →

Son Duong, M.D.

Vascular Surgery (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
44%Service-mix similarityView profile →

Peter H Lin, M.D.

Vascular Surgery (CMS) · Arcadia, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
44%Service-mix similarityView profile →

Varinder Singh Phangureh, M.D.

Vascular Surgery (CMS) · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Removal of plaque in arteries of leg (37225)
43%Service-mix similarityView profile →

Francisco Vega, M.D.

Vascular Surgery (CMS) · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of plaque in artery of leg, initial vessel (37229)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
43%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.