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Compare the published Medicare service mix of Paul Feuerstadt, M.D. with clinicians in the same registry specialty: Gastroenterology (CMS).

HAMDEN, CT · Exact areaEdit location

2024 published service data · 15 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Daniel Helburn, MD

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
84%Service-mix similarityView profile →

Jeffrey W Kwan, M.D.

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
78%Service-mix similarityView profile →

Jeremy Lester Matloff, M.D.

Gastroenterology · Internal Medicine (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
77%Service-mix similarityView profile →

Francis Wing-Kai Chan, MD

Gastroenterology · Internal Medicine (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
76%Service-mix similarityView profile →

Benigno Rafael Varela

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
74%Service-mix similarityView profile →

Mark Taylor, MD

Gastroenterology · Internal Medicine (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
74%Service-mix similarityView profile →

Douglas J Grunwald, MD

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
71%Service-mix similarityView profile →

Karl Michael Langberg, M.D.

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • 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 →

David J Hass, M.D.

Gastroenterology · Internal Medicine (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
71%Service-mix similarityView profile →

Tai Hang Ho, M.D.

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • 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 →

Renuka Umashanker, MD

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
70%Service-mix similarityView profile →

Anamika Margaret Reed, M.D.

Gastroenterology (CMS) · Hamden, CT

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
69%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.