Zachariah Joseph Blegen-Dipietro, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Baltimore, MD
Shared published services3 shared services · view billing descriptions
67%Service-mix similarity~46.4 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Ali Farzan Jon, MD with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).
EASTON, MD · 50 milesEdit location
Within 50 miles · Approximate ZIP-area distance
Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works
2024 published service data · 42 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
David Zheng-Li Xu, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Dover, DE
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~40.7 milesView profile →
Frank J Groshek, MD
Diagnostic Radiology · Interventional Radiology (CMS) · Annapolis, MD
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~29.5 milesView profile →
Quang Hong Nguyen
Diagnostic Radiology · Interventional Radiology (CMS) · Annapolis, MD
Shared published services3 shared services · view billing descriptions
63%Service-mix similarity~29.5 milesView profile →
Imran Tauhid Siddiqui
Diagnostic Radiology · Interventional Radiology (CMS) · Baltimore, MD
Shared published services3 shared services · view billing descriptions
59%Service-mix similarity~48.2 milesView profile →
George J. Odell, M.D.
Diagnostic Radiology (CMS) · Annapolis, MD
Shared published services3 shared services · view billing descriptions
58%Service-mix similarity~29.5 milesView profile →
David Amadu, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Baltimore, MD
Shared published services3 shared services · view billing descriptions
57%Service-mix similarity~46.4 milesView profile →
Gwendolyn Hubbell, M.D.
Diagnostic Radiology (CMS) · Baltimore, MD
Shared published services3 shared services · view billing descriptions
56%Service-mix similarity~46.4 milesView profile →
Michael A Amygdalos
Diagnostic Radiology (CMS) · Dover, DE
Shared published services3 shared services · view billing descriptions
50%Service-mix similarity~40.7 milesView profile →
Andrew Dionysios Vennos, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Salisbury, MD
Shared published services3 shared services · view billing descriptions
50%Service-mix similarity~36.2 milesView profile →
Nabeel Mohsin Akhter, M.B.B.S
Interventional Radiology (CMS) · Baltimore, MD
Shared published services3 shared services · view billing descriptions
49%Service-mix similarity~46.4 milesView profile →
Thomas Joseph Riccio, M.D.
Diagnostic Radiology · Interventional Radiology (CMS) · Salisbury, MD
Shared published services3 shared services · view billing descriptions
48%Service-mix similarity~36.2 milesView 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 approximate distance 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.