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Compare the published Medicare service mix of Vladimir Markovicl Kushnir, MD with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 110 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Koushik Kumar Das, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
83%Service-mix similarityView profile →

Gabriel David Lang, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
82%Service-mix similarityView profile →

Arvind Rengarajan, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
78%Service-mix similarityView profile →

David Lee Ulrich, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
71%Service-mix similarityView profile →

Ahmad Najdat Bazarbashi, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
69%Service-mix similarityView profile →

Jason Gary Bill, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
68%Service-mix similarityView profile →

Rajesh N Keswani, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
65%Service-mix similarityView profile →

Samuel Joseph Burton, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
64%Service-mix similarityView profile →

Kishore Maganty, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
62%Service-mix similarityView profile →

Michael Ansstas, M.D.

Allergy/Immunology · Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
60%Service-mix similarityView profile →

Stephen Lawler Hasak, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
60%Service-mix similarityView profile →

Wissam Kiwan, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
60%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.