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Compare the published Medicare service mix of Roberto Fernando Rojas, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

MILWAUKEE, WI · Exact areaEdit location

2024 published service data · 149 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lynn Marie Gilles, M.D.

Specialty details in registry · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Dxa bone density measurement of forearm, finger, hand, or foot (77081)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
82%Service-mix similarityView profile →

Daniel J Bucklan, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study whole body with ct scan (78816)
49%Service-mix similarityView profile →

Johanna Elizabeth Dobard, DO

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
2 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • X-ray of chest, 1 view (71045)
40%Service-mix similarityView profile →

Adam Peter Zorn, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Dxa bone density measurement of forearm, finger, hand, or foot (77081)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
39%Service-mix similarityView profile →

Danielle Marie Nagel, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study whole body with ct scan (78816)
37%Service-mix similarityView profile →

Michael R Holt, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of lung ventilation and circulation (78582)
  • Nuclear medicine study of bone and/or joint whole body (78306)
33%Service-mix similarityView profile →

Matthieu Joseph Mayer, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Dxa bone density measurement of forearm, finger, hand, or foot (77081)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
33%Service-mix similarityView profile →

Eric Phillip Segal, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study whole body with ct scan (78816)
31%Service-mix similarityView profile →

Keith Pham, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • X-ray of chest, 1 view (71045)
29%Service-mix similarityView profile →

Aaron James Hendon, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • X-ray of chest, 1 view (71045)
29%Service-mix similarityView profile →

Matthew Robert Vickery, MD

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Dxa bone density measurement of forearm, finger, hand, or foot (77081)
  • X-ray of chest, 1 view (71045)
26%Service-mix similarityView profile →

Eric Fair, M.D.

Diagnostic Radiology (CMS) · Milwaukee, WI

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Imaging for evaluation of swallowing function (74230)
24%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.