A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Stephen J Sula, M.D. with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

HOFFMAN ESTATES, IL · 10 milesEdit location
Within 10 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 · 5 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Westley D. Zimmer, M.D.

Diagnostic Radiology (CMS) · Elk Grove Village, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Dxa bone density measurement of hip, pelvis, spine (77080)
81%Service-mix similarity~8.1 milesView profile →

Brian Schwartz, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Elgin, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Dxa bone density measurement of hip, pelvis, spine (77080)
75%Service-mix similarity~9.4 milesView profile →

Sean P Zivin, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Arlington Heights, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Dxa bone density measurement of hip, pelvis, spine (77080)
58%Service-mix similarity~7.8 milesView profile →

Scott Glen Asselmeier, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Barrington, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis without contrast (74176)
43%Service-mix similarity~7.2 milesView profile →

Rotimi Johnson, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Elgin, IL

Shared published services
3 shared services · view billing descriptions
  • Ultrasound study of one arm or leg veins with compression and maneuvers (93971)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Ultrasonic guidance for blood vessel access (76937)
8%Service-mix similarity~9.4 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.