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Similar work.
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Compare the published Medicare service mix of Louis Lin, M.D. with clinicians in the same registry specialty: Anesthesiology.

CHICAGO, IL · Exact areaEdit location

2024 published service data · 432 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

George Katsoyannis

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
75%Service-mix similarityView profile →

Ronvir Singh Sangha, MD

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
73%Service-mix similarityView profile →

Lakshmi Iyer

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
69%Service-mix similarityView profile →

David Sklar

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
67%Service-mix similarityView profile →

John Patrick Hartnett

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
67%Service-mix similarityView profile →

Sumol J Nedumgottil, MD

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
67%Service-mix similarityView profile →

Manish A Patel, M.D.

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
67%Service-mix similarityView profile →

Igor Tkachenko, MD

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
66%Service-mix similarityView profile →

Omar Qayum, MD

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
66%Service-mix similarityView profile →

Matthew Q Shaw, MD

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
66%Service-mix similarityView profile →

Justin Yuen Tong, M.D.

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for x-ray on artery of brain, heart, or chest (01926)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
66%Service-mix similarityView profile →

Keith Ruskin

Anesthesiology · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for extensive surgery on spine (00670)
66%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.