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

CHICAGO, IL · Exact areaEdit location

2024 published service data · 158 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jasmine Sinha, MD MPH

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
71%Service-mix similarityView profile →

Abdul Aziz Aadam, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
71%Service-mix similarityView profile →

Terrance Rodrigues, MD

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
67%Service-mix similarityView profile →

Christopher Grant Chapman, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • 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)
66%Service-mix similarityView profile →

Srinadh Komanduri, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
66%Service-mix similarityView profile →

Rohit Agrawal, MD

Gastroenterology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
66%Service-mix similarityView profile →

Uzma Siddiqui

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Exam of common bile and/or pancreatic duct using a flexible endoscope (43273)
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
65%Service-mix similarityView profile →

Neal Ambrish Mehta

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • 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)
60%Service-mix similarityView profile →

Edward Charles Villa, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • Review by radiologist of image from tube placement into bile duct using an endoscope (74328)
  • Ultrasound guided needle aspiration or biopsy of esophagus using a flexible endoscope (43238)
57%Service-mix similarityView profile →

Kevin Liu

Gastroenterology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Removal of stone or debris from bile or pancreatic duct using a flexible endoscope (43264)
  • 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)
56%Service-mix similarityView profile →

Jane Suh, M.D.

Gastroenterology (CMS) · Chicago, IL

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
56%Service-mix similarityView profile →

Asim Shuja, M.D.

Gastroenterology (CMS) · Chicago, IL

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
56%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.