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Compare the published Medicare service mix of Daniel Karb with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

HOUSTON, TX · Exact areaEdit location

2024 published service data · 182 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Zubair Khan, M.D

Gastroenterology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
83%Service-mix similarityView profile →

Alberto Oswaldo Barroso, MD

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
75%Service-mix similarityView profile →

Neha Mathur, M.D.

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of large bowel using a flexible endoscope (45380)
75%Service-mix similarityView profile →

Kevin Kline, MD

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of large bowel using a flexible endoscope (45380)
75%Service-mix similarityView profile →

Ihsan Al Bayati, MD

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
75%Service-mix similarityView profile →

Cole Taggart Thomson

Gastroenterology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
74%Service-mix similarityView profile →

Marc F Catalano, MD

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of large bowel using a flexible endoscope (45378)
73%Service-mix similarityView profile →

Adrianne Van Norman, DO

Gastroenterology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
73%Service-mix similarityView profile →

Nabil Mansour, MD

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
73%Service-mix similarityView profile →

Cristian Enrique Dominguez, M.D.

Gastroenterology · Internal Medicine (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of large bowel using a flexible endoscope (45380)
73%Service-mix similarityView profile →

Aparna P. Kulkarni, MD

Specialty details in registry · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of large bowel using a flexible endoscope (45380)
72%Service-mix similarityView profile →

Shawn Gurwara, M.D.

Gastroenterology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43235)
72%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.