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Compare the published Medicare service mix of Zachariah Joseph Blegen-Dipietro, M.D. with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

BALTIMORE, MD · Exact areaEdit location

2024 published service data · 26 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Edward Ahn, M.D.

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
69%Service-mix similarityView profile →

Amit Kalaria, M.D.

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
67%Service-mix similarityView profile →

David Amadu, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
61%Service-mix similarityView profile →

Imran Tauhid Siddiqui

Diagnostic Radiology · Interventional Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
61%Service-mix similarityView profile →

Sarah Dawood Mezban, M.D

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
57%Service-mix similarityView profile →

Nabeel Mohsin Akhter, M.B.B.S

Interventional Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
57%Service-mix similarityView profile →

Gwendolyn Hubbell, M.D.

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
54%Service-mix similarityView profile →

Il Kyoon Kim

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
53%Service-mix similarityView profile →

David Glen Taylor, MD

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
49%Service-mix similarityView profile →

Elie Portnoy, M.D,

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
45%Service-mix similarityView profile →

Nikhil Bhagat, M.D.

Diagnostic Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
38%Service-mix similarityView profile →

Grafe Reid Lyons, M.D., PH.D.

Interventional Radiology (CMS) · Baltimore, MD

Shared published services
3 shared services · view billing descriptions
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
38%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.