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Compare the published Medicare service mix of Vahram Ornekian with clinicians in the same registry specialty: Thoracic Surgery · Vascular Surgery (CMS).

RESTON, VA · 10 milesEdit location
Within 10 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 · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Alan M Speir, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
2 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
48%Service-mix similarity~7.0 milesView profile →

Sandeep Jitendra Khandhar, MD

Cardiac Surgery · Thoracic Surgery · Vascular Surgery (CMS) · Fairfax, VA

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
35%Service-mix similarity~3.7 milesView profile →

Ramesh Singh, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
1 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
26%Service-mix similarity~7.0 milesView profile →

Liam Patrick Ryan, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
1 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
23%Service-mix similarity~7.0 milesView profile →

Kei Suzuki, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
1 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)
22%Service-mix similarity~7.0 milesView profile →

Eric Leo Sarin, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
1 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
21%Service-mix similarity~7.0 milesView profile →

Michael J Weyant, MD

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Falls Church, VA

Shared published services
1 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)
21%Service-mix similarity~7.0 milesView profile →

John W Rhee, M.D.

Cardiac Surgery · Thoracic Surgery · Vascular Surgery (CMS) · Arlington, VA

Shared published services
1 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
16%Service-mix similarity~9.6 milesView profile →

Paul S Massimiano, M.D.

Cardiovascular Disease (Cardiology) · Thoracic Surgery · Vascular Surgery (CMS) · Falls Church, VA

Shared published services
1 shared services · view billing descriptions
  • Replacement of aortic valve through the skin and femoral artery (33361)
15%Service-mix similarity~7.0 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.