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Compare the published Medicare service mix of Chad L Christensen, DO with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

FORT COLLINS, CO · Exact areaEdit location

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

Varun Razdan, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
89%Service-mix similarityView profile →

Nicholas Constantine, M.D.

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
85%Service-mix similarityView profile →

Stanley William Weinstein, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
80%Service-mix similarityView profile →

Christopher Michael Fleener, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
77%Service-mix similarityView profile →

Scott B Loomis, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
75%Service-mix similarityView profile →

Karen B Alderfer, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
73%Service-mix similarityView profile →

Thomas Robert Dunphy, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
71%Service-mix similarityView profile →

Michael James Geraghty, MD

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
70%Service-mix similarityView profile →

Joseph M Carabetta, M.D., M.S.

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
70%Service-mix similarityView profile →

Kevin Limbaugh, M.D.

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
69%Service-mix similarityView profile →

Paul W Johnson, M.D.

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
69%Service-mix similarityView profile →

Matthew Ross Lafleur, M.D.

Diagnostic Radiology (CMS) · Fort Collins, CO

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • X-ray of chest, 1 view (71045)
69%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.