David William Allison, M.D.
Interventional Radiology · Vascular Surgery (CMS) · Stockbridge, GA
Shared published services3 shared services · view billing descriptions
40%Service-mix similarityView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of David Ross Penn, M.D. with clinicians in the same registry specialty: Interventional Radiology (CMS).
STOCKBRIDGE, GA · Exact areaEdit location
2024 published service data · 4 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Sachin Sheth, MD
Interventional Radiology · Vascular Surgery (CMS) · Stockbridge, GA
Shared published services3 shared services · view billing descriptions
33%Service-mix similarityView profile →
Nemil Shah, M.D.
Interventional Radiology (CMS) · Stockbridge, GA
Shared published services3 shared services · view billing descriptions
17%Service-mix similarityView profile →
Charles Arthur Gilliland, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Stockbridge, GA
Shared published services2 shared services · view billing descriptions
8%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.