A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Christopher A Porter, MD with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

KINGMAN, AZ · 100 milesEdit location
Within 100 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 19 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brandon Repko, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
67%Service-mix similarity~95.7 milesView profile →

Matthew Louis Eltgroth, MD

Diagnostic Radiology (CMS) · Henderson, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
61%Service-mix similarity~85.2 milesView profile →

Kelly Robert Gardner, M.D.

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • X-ray of shoulder, minimum of 2 views (73030)
61%Service-mix similarity~92.6 milesView profile →

Mark Barnett Johnson, MD

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
59%Service-mix similarity~96.0 milesView profile →

Tsung Han Stan Liu, M.D.

Specialty details in registry · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
59%Service-mix similarity~93.6 milesView profile →

Samir S Hadi, MBCHB

Diagnostic Radiology · Interventional Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
52%Service-mix similarity~91.1 milesView profile →

Peter L Weidenfeld, M.D.

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • X-ray of shoulder, minimum of 2 views (73030)
51%Service-mix similarity~92.6 milesView profile →

Xi Xue, M.D.

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
51%Service-mix similarity~96.0 milesView profile →

Ryan Rimer, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
50%Service-mix similarity~95.7 milesView profile →

Kamel El Salek, M.D.

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
50%Service-mix similarity~96.0 milesView profile →

Nadeer Pirani, M.D.

Interventional Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
49%Service-mix similarity~96.8 milesView profile →

Andrew Joseph Kuei, M.D.

Diagnostic Radiology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of chest without contrast (71250)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
49%Service-mix similarity~95.7 milesView 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 approximate distance 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.