Jeffrey Hill Gertsch, M.D.
Neurology (CMS) · San Diego, CA
Shared published services3 shared services · view billing descriptions
54%Service-mix similarityView profile →
Similar work.
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Compare the published Medicare service mix of Alissa Ann Carnelian, MS with clinicians in the same registry specialty: Qualified Audiologist (CMS).
SAN DIEGO, CA · Exact areaEdit location
2024 published service data · 2 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Dominic Alexander Ferrey, M.D.
Neurology (CMS) · San Diego, CA
Shared published services1 shared services · view billing descriptions
13%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.