HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Bernadette Roseanne Diegnan, D.O. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

GLENDALE, AZ · Exact areaEdit location

2024 published service data · 37 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian J Frohna, MD

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
71%Service-mix similarityView profile →

Aaron L Greeley, DO

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
69%Service-mix similarityView profile →

Patrick G Fredenberg, MD

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
67%Service-mix similarityView profile →

Alicia Marie Cartagena, MD

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
65%Service-mix similarityView profile →

Colin Michael Thompson, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
59%Service-mix similarityView profile →

Adina Weis, M.D.

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
58%Service-mix similarityView profile →

Michael Hanelin, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
58%Service-mix similarityView profile →

Christian L Dewald, MD

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
56%Service-mix similarityView profile →

Joel Urena, M.D.

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
56%Service-mix similarityView profile →

Zifa Wang, M.D.

Interventional Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
56%Service-mix similarityView profile →

Gordon Haugland, M.D.

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain without contrast (70551)
  • Mri scan of brain before and after contrast (70553)
  • Mri scan of lower spinal canal without contrast (72148)
51%Service-mix similarityView profile →

Matthew Joseph Calhoun, MD

Diagnostic Radiology (CMS) · Glendale, AZ

Shared published services
3 shared services · view billing descriptions
  • Mri scan of brain before and after contrast (70553)
  • Ct scan of blood vessels of neck with contrast (70498)
  • Ct scan of blood vessels of head with contrast (70496)
51%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.