A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of David Joseph Ryder, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

PHOENIX, AZ · Exact areaEdit location

2024 published service data · 120 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael D Rosellini, M.D.

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Piflufolastat f-18, diagnostic, 1 millicurie (A9595)
80%Service-mix similarityView profile →

Max O Staggs, MD

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Piflufolastat f-18, diagnostic, 1 millicurie (A9595)
80%Service-mix similarityView profile →

Robert Frank Takacs, MD

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
69%Service-mix similarityView profile →

Sasha O'brien Staack, MD

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
67%Service-mix similarityView profile →

Terrence J Cavanaugh, MD

Diagnostic Radiology · Pain Management (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
67%Service-mix similarityView profile →

Mark Bailey, MD

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
65%Service-mix similarityView profile →

Matthew David Nitz, M.D., PH.D.

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
65%Service-mix similarityView profile →

Ross Mcarthur, MD

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
63%Service-mix similarityView profile →

John N Hoffman, M.D.

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
60%Service-mix similarityView profile →

Jonathan Daniel Fullner, M.D.

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
58%Service-mix similarityView profile →

John Ramsey Warfield, MD.

Diagnostic Radiology (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
57%Service-mix similarityView profile →

Ian Leroy Musil, M.D.

Diagnostic Radiology · Interventional Pain Management (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 2 views (71046)
56%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.