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Compare the published Medicare service mix of Joan K Rastegar, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

MA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Rodolfo F. Nunez, M.D.

Nuclear Medicine (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)
79%Service-mix similarityView profile →

Shadi Abdar Esfahani, MD, MPH

Diagnostic Radiology (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study limited area with ct scan (78814)
72%Service-mix similarityView profile →

Bashar Kako

Diagnostic Radiology · Nuclear Medicine (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)
64%Service-mix similarityView profile →

Sheung Chee Thomas Ng, M.D. PH.D

Diagnostic Radiology · Nuclear Medicine (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study limited area with ct scan (78814)
62%Service-mix similarityView profile →

Hyewon Hyun, M.D.

Diagnostic Radiology (CMS) · Cambridge, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)
  • Nuclear medicine study limited area with ct scan (78814)
59%Service-mix similarityView profile →

Gustavo A Mercier, MD PHD

Diagnostic Radiology · Nuclear Medicine (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)
  • Nuclear medicine study limited area with ct scan (78814)
55%Service-mix similarityView profile →

Pedram Heidari, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study limited area with ct scan (78814)
54%Service-mix similarityView profile →

Umar Mahmood, MD PHD

Diagnostic Radiology · Nuclear Medicine (CMS) · Boston, MA

Shared published services
2 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine study limited area with ct scan (78814)
45%Service-mix similarityView profile →

Steven Wetzner, MD

Diagnostic Radiology (CMS) · Roxbury Crossing, MA

Shared published services
1 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
40%Service-mix similarityView profile →

David A Bader, M.D.

Diagnostic Radiology (CMS) · Worcester, MA

Shared published services
2 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine study limited area with ct scan (78814)
38%Service-mix similarityView profile →

Stephen T Sweriduk, M.D.

Diagnostic Radiology (CMS) · Brockton, MA

Shared published services
1 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
34%Service-mix similarityView profile →

Shahar Glomski, M.D.

Diagnostic Radiology (CMS) · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)
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.