Shekhar C. Karmaker, MD
Anesthesiology · Summit, NJ
Shared published services3 shared services · view billing descriptions
75%Service-mix similarity~6.4 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Lorne Sheren, MD with clinicians in the same registry specialty: Anesthesiology.
NEW VERNON, NJ · 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 · 173 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Brian Lucas, MD
Anesthesiology · Morristown, NJ
Shared published services3 shared services · view billing descriptions
69%Service-mix similarity~4.2 milesView profile →
Gannat Shalan, DO
Anesthesiology · Morristown, NJ
Shared published services3 shared services · view billing descriptions
69%Service-mix similarity~4.2 milesView profile →
Keith Riabov, MD
Anesthesiology · Morristown, NJ
Shared published services3 shared services · view billing descriptions
68%Service-mix similarity~4.2 milesView profile →
Nnaja Okorafor, MD
Anesthesiology · Summit, NJ
Shared published services3 shared services · view billing descriptions
65%Service-mix similarity~6.4 milesView profile →
James Kenneth Mattie, M.D.
Anesthesiology · Parsippany, NJ
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~9.6 milesView profile →
Keith A. Fleischman, D.O.
Anesthesiology · Florham Park, NJ
Shared published services3 shared services · view billing descriptions
64%Service-mix similarity~5.6 milesView profile →
James Sieber, MD
Anesthesiology · Morristown, NJ
Shared published services3 shared services · view billing descriptions
60%Service-mix similarity~4.2 milesView profile →
Timothy Dowd, M.D.
Anesthesiology · Summit, NJ
Shared published services3 shared services · view billing descriptions
59%Service-mix similarity~6.4 milesView profile →
Betsy Klinger, D.O.
Anesthesiology · Summit, NJ
Shared published services3 shared services · view billing descriptions
58%Service-mix similarity~6.4 milesView profile →
Nirali J Desai, MD
Anesthesiology · Berkeley Heights, NJ
Shared published services3 shared services · view billing descriptions
58%Service-mix similarity~4.9 milesView profile →
Scott Pacific, MD
Anesthesiology · Summit, NJ
Shared published services3 shared services · view billing descriptions
58%Service-mix similarity~6.4 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.