Taj A Khan, MD
Anesthesiology · Winfield, IL
Shared published services1 shared services · view billing descriptions
52%Service-mix similarity~9.3 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Carmen Maria Rivera, M.D. with clinicians in the same registry specialty: Anesthesiology.
AURORA, 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 · 96 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Elizabeth Ann Sherrow, MD
Anesthesiology · Geneva, IL
Shared published services1 shared services · view billing descriptions
51%Service-mix similarity~8.2 milesView profile →
Saleh Hajjo-Rifai, MD
Anesthesiology · Oswego, IL
Shared published services1 shared services · view billing descriptions
48%Service-mix similarity~7.2 milesView profile →
Randa M Sawan, MD
Anesthesiology · Naperville, IL
Shared published services1 shared services · view billing descriptions
46%Service-mix similarity~6.5 milesView profile →
James A Hunter
Anesthesiology · Geneva, IL
Shared published services1 shared services · view billing descriptions
46%Service-mix similarity~8.2 milesView profile →
Howard C Duncan, MD
Anesthesiology · Winfield, IL
Shared published services1 shared services · view billing descriptions
45%Service-mix similarity~9.3 milesView profile →
Suada N Spirtovic, MD
Anesthesiology · Naperville, IL
Shared published services1 shared services · view billing descriptions
43%Service-mix similarity~5.2 milesView profile →
Lilly Young Hi Moon, MD
Anesthesiology · Winfield, IL
Shared published services1 shared services · view billing descriptions
42%Service-mix similarity~9.3 milesView profile →
Gonzalo Castillo, MD
Anesthesiology · Winfield, IL
Shared published services1 shared services · view billing descriptions
41%Service-mix similarity~9.3 milesView profile →
Scott Mittenthal, MD
Anesthesiology · Naperville, IL
Shared published services1 shared services · view billing descriptions
40%Service-mix similarity~6.5 milesView profile →
Ismail Kazmi
Anesthesiology · Naperville, IL
Shared published services1 shared services · view billing descriptions
40%Service-mix similarity~6.5 milesView profile →
John A. Goeders, M.D.
Anesthesiology · Naperville, IL
Shared published services1 shared services · view billing descriptions
40%Service-mix similarity~6.5 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.