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

DANVILLE, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ming Fang, MD

Gastroenterology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of large bowel tissue using a flexible endoscope (45390)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Biopsy of small bowel (except ileum) using an endoscope (44361)
72%Service-mix similarity~8.4 milesView profile →

Cynthia M. Mullen, M.D.

Gastroenterology (CMS) · Walnut Creek, CA

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)
  • New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)
  • Biopsy of large bowel using a flexible endoscope (45380)
55%Service-mix similarity~8.1 milesView profile →

Sam Saeed Zamani, M.D.

Specialty details in registry · Walnut Creek, CA

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)
  • New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)
  • Biopsy of large bowel using a flexible endoscope (45380)
55%Service-mix similarity~8.1 milesView profile →

Frederick Anderson Rowe, M.D.

Specialty details in registry · San Ramon, CA

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)
  • New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)
  • Biopsy of large bowel using a flexible endoscope (45380)
52%Service-mix similarity~4.7 milesView profile →

Seyed Kavous Pakseresht, MD

Gastroenterology (CMS) · San Ramon, CA

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)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
50%Service-mix similarity~4.7 milesView profile →

Yi Zheng, M.D.

Gastroenterology · Internal Medicine (CMS) · Walnut Creek, CA

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 small bowel (except ileum) using an endoscope (44361)
  • Biopsy of large bowel using a flexible endoscope (45380)
49%Service-mix similarity~8.1 milesView profile →

Philip C Yee, M.D.

Gastroenterology (CMS) · San Ramon, CA

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)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
46%Service-mix similarity~4.7 milesView profile →

Rishi Krishan Sharma, M.D.

Gastroenterology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of large bowel tissue using a flexible endoscope (45390)
  • 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)
45%Service-mix similarity~8.1 milesView profile →

Shireen Ghorbani, M.D.

Gastroenterology (CMS) · Walnut Creek, CA

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)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
42%Service-mix similarity~8.1 milesView profile →

Gerald L Tarder, M.D.

Specialty details in registry · Walnut Creek, 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)
  • Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery (45384)
41%Service-mix similarity~8.1 milesView profile →

David T Wong, M.D.

Gastroenterology (CMS) · San Ramon, CA

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)
  • New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)
  • Biopsy of large bowel using a flexible endoscope (45380)
40%Service-mix similarity~4.7 milesView profile →

Kanwar R. S. Gill, M.D.

Gastroenterology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of large bowel tissue using a flexible endoscope (45390)
  • 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)
39%Service-mix similarity~9.7 milesView 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 approximate distance 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.