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Compare the published Medicare service mix of Christopher M Shackles, D.O., MPH with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

STONY BROOK, NY · Exact areaEdit location

2024 published service data · 8 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Valmore Joseph Suprenant, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
  • Replacement of kidney drainage tube using imaging guidance with review by radiologist (50435)
77%Service-mix similarityView profile →

Andrew Carter Maleson, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
72%Service-mix similarityView profile →

John Ferretti, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
69%Service-mix similarityView profile →

Daniel Ohngemach

Diagnostic Radiology · Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
51%Service-mix similarityView profile →

Mark J. Sands, MD

Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
2 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
43%Service-mix similarityView profile →

Vladimir Sheynzon, MD

Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Review by radiologist of ct guidance for needle placement (77012)
43%Service-mix similarityView profile →

Lok Yun Sung, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
27%Service-mix similarityView profile →

Sean Jason Adwar, M.D.

Diagnostic Radiology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
  • Ultrasonic guidance for blood vessel access (76937)
  • Drainage of fluid from abdominal cavity using imaging guidance (49083)
23%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.