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Compare the published Medicare service mix of Bruce D Greenwald, M.D. 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.

Marcia Irene Canto, 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)
  • Destruction of polyp or growth of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43270)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

Michael Siuta, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
60%Service-mix similarityView profile →

Sun Jung Oh

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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
60%Service-mix similarityView profile →

Eduardo J Gonzalez-Velez, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (43249)
59%Service-mix similarityView profile →

Ellen M. Stein, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (43249)
59%Service-mix similarityView profile →

Arjun Vaid, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
59%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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
59%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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of guide wire with dilation of esophagus using a flexible endoscope (43248)
58%Service-mix similarityView profile →

George Kunnackal John, M.D., 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm (43249)
58%Service-mix similarityView profile →

Loc T Le, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of guide wire with dilation of esophagus using a flexible endoscope (43248)
58%Service-mix similarityView profile →

Zilla Huma Hussain, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Insertion of guide wire with dilation of esophagus using a flexible endoscope (43248)
58%Service-mix similarityView profile →

Steven Howard Epstein, MD

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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%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.