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Compare the published Medicare service mix of Ruben Ricardo Aymerich, MD with clinicians in the same registry specialty: Gastroenterology (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 110 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ted Walker, M.D.

Gastroenterology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
93%Service-mix similarityView profile →

Joel Riley, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
90%Service-mix similarityView profile →

Giao Vuong, M.D.

Gastroenterology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
86%Service-mix similarityView profile →

Youssef Assioun, MD

Gastroenterology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
86%Service-mix similarityView profile →

Benjamin Schmidt, MD

Gastroenterology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
85%Service-mix similarityView profile →

Michael J Heavey, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
83%Service-mix similarityView profile →

Elizabeth Marsicano, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
81%Service-mix similarityView profile →

Yazan A Abdalla, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
81%Service-mix similarityView profile →

Muddasani Babitha Reddy, DO

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
80%Service-mix similarityView profile →

Mohammed Eyad Yaseen Alsabbagh, M.D.

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
79%Service-mix similarityView profile →

Faiza Bhatti, M.D.,

Gastroenterology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
78%Service-mix similarityView profile →

Chien-Huan Chen, MD

Gastroenterology · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
77%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.