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Compare the published Medicare service mix of Zachary Smith, DO with clinicians in the same registry specialty: Gastroenterology (CMS).

MILWAUKEE, WI · Exact areaEdit location

2024 published service data · 65 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Khaled Alsabbagh Alchirazi, MD

Specialty details in registry · Milwaukee, WI

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)
67%Service-mix similarityView profile →

W Harley Sobin, MD

Gastroenterology (CMS) · Milwaukee, WI

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)
54%Service-mix similarityView profile →

Kulwinder S Dua, MD

Gastroenterology · Internal Medicine (CMS) · Milwaukee, WI

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)
47%Service-mix similarityView profile →

Benson Massey, MD

Gastroenterology (CMS) · Milwaukee, WI

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)
42%Service-mix similarityView profile →

Matthew Thomas Peller, MD

Gastroenterology (CMS) · Milwaukee, WI

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)
41%Service-mix similarityView profile →

Rajeev Nayar, MD

Gastroenterology (CMS) · Milwaukee, WI

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)
40%Service-mix similarityView profile →

Phillip Ruben Chisholm, M.D.

Gastroenterology (CMS) · Milwaukee, WI

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 →

Dilpesh S Agrawal, M.D, MRCP

Gastroenterology · Internal Medicine (CMS) · Milwaukee, WI

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)
37%Service-mix similarityView profile →

Nicole Marie Griglione, M.D.

Gastroenterology (CMS) · Milwaukee, WI

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)
35%Service-mix similarityView profile →

Yuchen Wang

Gastroenterology · Internal Medicine (CMS) · Milwaukee, WI

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)
34%Service-mix similarityView profile →

William John Blosky, M.D.

Gastroenterology (CMS) · Milwaukee, WI

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)
31%Service-mix similarityView profile →

Adam Van Huis

Gastroenterology (CMS) · Milwaukee, WI

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)
31%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.