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Compare the published Medicare service mix of Rishi Ashok Roy, M.D. with clinicians in the same registry specialty: Vascular Surgery (CMS).

MS · Exact areaEdit location

2024 published service data · 28 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Danon Eugenio Garrido Montes De Oca, MD

Vascular Surgery (CMS) · Flowood, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
70%Service-mix similarityView profile →

John Devin Blackwell Watson, M.D.

General Surgery · Vascular Surgery (CMS) · Keesler Afb, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound evaluation of blood vessel with review by radiologist, each additional vessel (37253)
  • Ultrasound of both sides of head and neck blood flow (93880)
52%Service-mix similarityView profile →

Jacqueline Anne Majors, M.D.

Vascular Surgery (CMS) · Southaven, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
48%Service-mix similarityView profile →

Andrea Kelly Barker, M.D.

Vascular Surgery (CMS) · Gulfport, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
47%Service-mix similarityView profile →

Michael Brian Hogan, MD

Vascular Surgery (CMS) · Biloxi, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
46%Service-mix similarityView profile →

Joseph A Graham, D.O.

Vascular Surgery (CMS) · Gulfport, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
45%Service-mix similarityView profile →

Jon Harrison, M.D.

General Surgery (CMS) · Hattiesburg, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
44%Service-mix similarityView profile →

Marc E Mitchell, MD

Vascular Surgery (CMS) · Jackson, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
44%Service-mix similarityView profile →

Sourabh Mukherjee, MD

Vascular Surgery (CMS) · Hattiesburg, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
43%Service-mix similarityView profile →

Nicholas Sean Clapper, D.O.

Vascular Surgery (CMS) · Jackson, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
35%Service-mix similarityView profile →

Humayun Bakhtawar, M.D.

Vascular Surgery (CMS) · Hattiesburg, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Ultrasonic guidance for blood vessel access (76937)
34%Service-mix similarityView profile →

Jennifer R Dinning, M.D.

Vascular Surgery (CMS) · Jackson, MS

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of arm and leg arteries (93922)
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Review by radiologist of arm or leg artery image (75710)
34%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.