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Compare the published Medicare service mix of Abdulhameed Al-Sabban, MBBS with clinicians in the same registry specialty: Gastroenterology (CMS).

BALTIMORE, MD · Exact areaEdit location

2024 published service data · 91 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Peter Edwin Darwin, MD

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
74%Service-mix similarityView profile →

Raymond E. Kim, MD

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
73%Service-mix similarityView profile →

Eric M Goldberg, M.D.

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
70%Service-mix similarityView profile →

Joshua Seth Forman, M.D.

Gastroenterology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
63%Service-mix similarityView profile →

Margaret Geraldine Keane, MBBS, MSC

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

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 stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
50%Service-mix similarityView profile →

Ernest Tsao, MD

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

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 stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
49%Service-mix similarityView profile →

Saowanee Ngamruengphong, MD

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

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 stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
47%Service-mix similarityView profile →

John C Rabine, M.D.

Gastroenterology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
47%Service-mix similarityView profile →

Albert Steven Fleisher, M.D.

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

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 stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
45%Service-mix similarityView profile →

Anthony Kalloo, M.D.

Gastroenterology · Internal Medicine (CMS) · Baltimore, MD

Shared published services
2 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)
45%Service-mix similarityView profile →

Megan Dunnigan Willard, MD

Internal Medicine (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
44%Service-mix similarityView profile →

Venkata Sandeep Akshintala, M.D.

Gastroenterology (CMS) · Baltimore, MD

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 stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Insertion of stent into pancreatic or bile duct using a flexible endoscope (43274)
43%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.