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Compare the published Medicare service mix of Laura S. Chiu, MD, MPH with clinicians in the same registry specialty: Gastroenterology (CMS).

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 45 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ruzbeh Mosadeghi

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
39%Service-mix similarityView profile →

Gregory Fung, MD

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarityView profile →

Tarun Rustagi, M.D.

Gastroenterology (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
27%Service-mix similarityView profile →

Dennis D Shen, MD

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
27%Service-mix similarityView profile →

Christina Chou, MD

Gastroenterology (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
26%Service-mix similarityView profile →

Waseem Ahmad, M.D.

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
23%Service-mix similarityView profile →

Sun-Chuan Dai, MD

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
21%Service-mix similarityView profile →

Connie Wei-Lie Wang

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

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
21%Service-mix similarityView profile →

Priya Kathpalia, M.D.

Gastroenterology (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
16%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.