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

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 67 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Arthur Wei Yan, M.D

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Imaging of digestive tract done from the inside of the digestive tract (91110)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
89%Service-mix similarityView profile →

Suja Devi Dubois, MD

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
79%Service-mix similarityView profile →

Hyun Sil Kim, MD

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
77%Service-mix similarityView profile →

Cainan Foltz, MD

Gastroenterology · Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
77%Service-mix similarityView profile →

William Chang-Yuen Chen

Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
76%Service-mix similarityView profile →

Joshua Rubin, M.D.

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
74%Service-mix similarityView profile →

Sajiv Chandradas, M.D.

Gastroenterology · Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
73%Service-mix similarityView profile →

Derek R Patel, M.D.

Gastroenterology · Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
73%Service-mix similarityView profile →

Daniel Young Lee, M.D.

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
73%Service-mix similarityView profile →

John M Lyons, M.D.

Gastroenterology · Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
71%Service-mix similarityView profile →

Matthew Bender

Gastroenterology (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
71%Service-mix similarityView profile →

Andrew B Cummins, M.D.

Gastroenterology · Internal Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
71%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.