A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

MCHENRY, IL · Exact areaEdit location

2024 published service data · 31 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Robert Ortega, MD

Diagnostic Radiology · Radiation Oncology (CMS) · Mchenry, 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 head or brain without contrast (70450)
66%Service-mix similarityView profile →

Luke Wright, M.D.

Interventional Radiology (CMS) · Mchenry, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • X-ray of chest, 2 views (71046)
66%Service-mix similarityView profile →

Nirav C Shah, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
65%Service-mix similarityView profile →

Amanda M Wiant, MD

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
65%Service-mix similarityView profile →

James T Link, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
65%Service-mix similarityView profile →

Ketan Patel, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
64%Service-mix similarityView profile →

Ernest A Conti, MD

Diagnostic Radiology (CMS) · Mchenry, IL

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • X-ray of chest, 2 views (71046)
64%Service-mix similarityView profile →

Rizwan Ahmed, D.O

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
63%Service-mix similarityView profile →

Alex P Pallas, DO

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

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • X-ray of chest, 2 views (71046)
63%Service-mix similarityView profile →

Michael J. Flaherty, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
62%Service-mix similarityView profile →

Philip W. Gilroy, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
61%Service-mix similarityView profile →

Harpreet Singh Dhatt, M.D.

Diagnostic Radiology (CMS) · Mchenry, 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 head or brain without contrast (70450)
61%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.