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Compare the published Medicare service mix of Mark Glass-Royal, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

FREDERICK, MD · Exact areaEdit location

2024 published service data · 8 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Rhee, M.D.

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Ultrasound scan of head and neck soft tissue (76536)
  • Ultrasound scan of uterus, ovaries, tubes, cervix and pelvic area through vagina (76830)
62%Service-mix similarityView profile →

Rizwana Afzal, M.D.

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Complete ultrasound scan of abdomen (76700)
  • Mri scan of lower spinal canal without contrast (72148)
  • Complete ultrasound scan behind abdominal cavity (76770)
34%Service-mix similarityView profile →

Sherwin Danaie, MD

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Mri scan of lower spinal canal without contrast (72148)
  • Complete ultrasound scan behind abdominal cavity (76770)
  • X-ray of chest, 2 views (71046)
33%Service-mix similarityView profile →

Judd M. Goldberg, M.D.

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Complete ultrasound scan of abdomen (76700)
  • Mri scan of lower spinal canal without contrast (72148)
  • Complete ultrasound scan behind abdominal cavity (76770)
32%Service-mix similarityView profile →

Anthony Rowedder, M.D.

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Mri scan of lower spinal canal without contrast (72148)
  • Complete ultrasound scan behind abdominal cavity (76770)
  • X-ray of chest, 2 views (71046)
30%Service-mix similarityView profile →

Gregory Lavanier, M.D.

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Complete ultrasound scan behind abdominal cavity (76770)
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
24%Service-mix similarityView profile →

Peter Kremers, MD

Diagnostic Radiology (CMS) · Frederick, 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)
17%Service-mix similarityView profile →

William C Fowlkes, MD

Diagnostic Radiology (CMS) · Frederick, MD

Shared published services
3 shared services · view billing descriptions
  • Mri scan of lower spinal canal without contrast (72148)
  • Mri scan of upper spinal canal without contrast (72141)
  • Mri scan of middle spinal canal without contrast (72146)
17%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.