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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).

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. 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 similarityView profile →

Shirley Pua, M.D.

Gastroenterology (CMS) · Visalia, 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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
65%Service-mix similarityView profile →

Marc David Wishingrad, MD

Gastroenterology (CMS) · Santa Monica, 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)
  • New patient office or other outpatient visit with straightforward medical decision making, if using time, 15 minutes or more (99202)
63%Service-mix similarityView profile →

Simrita Kaur Rahal, M.D.

Internal Medicine (CMS) · Bakersfield, 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)
  • Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more (99212)
62%Service-mix similarityView profile →

Razi M Arifuddin, MD

Gastroenterology (CMS) · Santa Rosa, 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)
59%Service-mix similarityView profile →

Sheila Savur, M.D.

Gastroenterology (CMS) · San Jose, 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)
58%Service-mix similarityView profile →

Paramvir Singh Rahal, MD

Gastroenterology (CMS) · Bakersfield, 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 small bowel (except ileum) using an endoscope (44361)
57%Service-mix similarityView profile →

Andrew Khoi Nguyen, MD

Gastroenterology · Internal Medicine (CMS) · Downey, 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)
56%Service-mix similarityView 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 similarityView profile →

Anh Tuan Duong, M.D.

Gastroenterology (CMS) · Rancho Mirage, 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 similarityView profile →

Theodore N Stein, M.D.

Specialty details in registry · Beverly Hills, 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 similarityView profile →

Prahalad B Jajodia, MD

Gastroenterology (CMS) · Fresno, 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)
54%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.