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Compare the published Medicare service mix of Nancy Katherine Rollins, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

TX · Exact areaEdit location

2024 published service data · 56 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Kuang-Chun Jim Hsieh, M.D.

Diagnostic Radiology · Neurology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
94%Service-mix similarityView profile →

Alessandro Gregorat

Diagnostic Radiology (CMS) · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
94%Service-mix similarityView profile →

Conan Gomez, MD

Diagnostic Radiology (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
88%Service-mix similarityView profile →

Peter Ihab Kamel, MD

Diagnostic Radiology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
86%Service-mix similarityView profile →

Kenneth Dean Williams, M.D.

Diagnostic Radiology · Neurology (CMS) · Temple, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
82%Service-mix similarityView profile →

Craig A Harr, MD

Diagnostic Radiology (CMS) · Fort Worth, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
79%Service-mix similarityView profile →

Arash Kamali, M.D.

Diagnostic Radiology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
77%Service-mix similarityView profile →

Dan Richardson, MD

Diagnostic Radiology (CMS) · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
76%Service-mix similarityView profile →

Anthony Masaryk, MD

Diagnostic Radiology (CMS) · Austin, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
75%Service-mix similarityView profile →

Wilson B Altmeyer, MD

Diagnostic Radiology (CMS) · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
73%Service-mix similarityView profile →

David Ernesto Timaran Montenegro, MD

Diagnostic Radiology (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
73%Service-mix similarityView profile →

David Harold Uhrbrock, MD

Interventional Radiology (CMS) · Temple, TX

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of brain without contrast (70551)
73%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.