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

STANFORD, CA · Exact areaEdit location

2024 published service data · 41 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Rahul Verma, MD

Gastroenterology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
88%Service-mix similarityView profile →

Karen Chunguhn Kim, MD

Gastroenterology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
78%Service-mix similarityView profile →

David Edward Goldenberg, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
77%Service-mix similarityView profile →

Mike Tzuhen Wei, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
77%Service-mix similarityView profile →

Samuel Neal Marcus, M.D.

Gastroenterology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
77%Service-mix similarityView profile →

Kian Keyashian, M.D.

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
70%Service-mix similarityView profile →

Aaron Justin Yeoh, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
67%Service-mix similarityView profile →

Walter Gwang-Up Park, M.D.

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
66%Service-mix similarityView profile →

Grant Eric Barber, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
66%Service-mix similarityView profile →

Alice Ahyoung Lee, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
64%Service-mix similarityView profile →

Yan Jiang, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
61%Service-mix similarityView profile →

Uri Ladabaum, MD

Gastroenterology · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
61%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.