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Compare the published Medicare service mix of Grant Howard Bonavia, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

BETHESDA, MD · Exact areaEdit location

2024 published service data · 19 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Khiet T Nguyen, MD

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries (A9552)
  • X-ray of chest, 2 views (71046)
63%Service-mix similarityView profile →

Zachary Mitchell Alexander, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
58%Service-mix similarityView profile →

Nishant Kumar, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
54%Service-mix similarityView profile →

Amir R Batouli, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Mri scan of abdomen before and after contrast (74183)
52%Service-mix similarityView profile →

Nicholas Chase Silvester, D.O.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
49%Service-mix similarityView profile →

Alan Cohen, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Ct scan of abdomen and pelvis with contrast (74177)
49%Service-mix similarityView profile →

Peter Daniel Snyder, M.D.

Specialty details in registry · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
45%Service-mix similarityView profile →

Brent Mccarragher, MD

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Ct scan of abdomen and pelvis with contrast (74177)
44%Service-mix similarityView profile →

Alexander Byron Galifianakis, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of knee, 3 views (73562)
  • X-ray of shoulder, minimum of 2 views (73030)
40%Service-mix similarityView profile →

Hugh Michael Dainer, MD, PHD, MBA

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
  • Ct scan of abdomen and pelvis with contrast (74177)
38%Service-mix similarityView profile →

Agnes E Holland, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
  • Ultrasound scan of head and neck soft tissue (76536)
38%Service-mix similarityView profile →

Simran Sandhu, M.D.

Diagnostic Radiology (CMS) · Bethesda, MD

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ultrasound scan of head and neck soft tissue (76536)
  • X-ray of shoulder, minimum of 2 views (73030)
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.