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Compare the published Medicare service mix of James Leonard Buxbaum, M.D. with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 102 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ara Sahakian, M.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
89%Service-mix similarityView profile →

Stephen Kim, MD

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
74%Service-mix similarityView profile →

Venkataraman Raman Muthusamy, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
66%Service-mix similarityView profile →

Derek Cheng, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
64%Service-mix similarityView profile →

Jacques Van Dam, M.D., PH.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
64%Service-mix similarityView profile →

Adnan Ameer, M.D.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
61%Service-mix similarityView profile →

Simon K Lo, M.D.

Gastroenterology (CMS) · Los Angeles, CA

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)
  • Replacement of stent in pancreatic or bile duct using a flexible endoscope (43276)
59%Service-mix similarityView profile →

Jeremy Ryan Herman, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
59%Service-mix similarityView profile →

Timnit Fesehaye Tekeste, M.D.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
58%Service-mix similarityView profile →

Adarsh Thaker, M.D.

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Ultrasound exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43259)
58%Service-mix similarityView profile →

Jeffrey Robert Lewis, MD

Gastroenterology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Elliott A Birnstein, M.D.

Gastroenterology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
55%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.