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Compare the published Medicare service mix of David N Butler, M.D. with clinicians in the same registry specialty: Gastroenterology (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.

Sujatha Kailas, MD

Gastroenterology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Diagnostic exam of large bowel using a flexible endoscope (45378)
83%Service-mix similarityView profile →

Ruchi Patel, M.D.

Gastroenterology · Hospitalist · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
71%Service-mix similarityView profile →

Saad Saffo, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Diagnostic exam of large bowel using a flexible endoscope (45378)
71%Service-mix similarityView profile →

Arun K Verma, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
71%Service-mix similarityView profile →

Paul V Fahrenbach, MD

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
71%Service-mix similarityView profile →

Amritbhai P Patel, MD

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
71%Service-mix similarityView profile →

Omar Said Nehme, MD

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
70%Service-mix similarityView profile →

Christian Stevoff, MD

Gastroenterology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
66%Service-mix similarityView profile →

John Losurdo, M.D.

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
65%Service-mix similarityView profile →

Sharif Ibrahim Murphy, M.D.

Gastroenterology (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
65%Service-mix similarityView profile →

Edwin Mcdonald

Gastroenterology · Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
65%Service-mix similarityView profile →

Amit Ishwarlal Patel, M.D

Internal Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
63%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.