HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Stephen Francis Chiu with clinicians in the same registry specialty: Cardiac Surgery · Pediatric Medicine · Thoracic Surgery (CMS).

CHICAGO, IL · Exact areaEdit location

2024 published service data · 43 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Malek Massad, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
74%Service-mix similarityView profile →

Maria Lucia L Madariaga

Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
52%Service-mix similarityView profile →

Benjamin Stevens Bryner, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
45%Service-mix similarityView profile →

Todd Guynn, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
41%Service-mix similarityView profile →

Jeffrey Mark Silver, MD

Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
37%Service-mix similarityView profile →

Chitaru Kurihara, M.D

Cardiac Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarityView profile →

David A Deboer, M.D., MBA

Cardiac Surgery · General Surgery · Thoracic Surgery · Vascular Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarityView profile →

Tyler Michael Gunn, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
27%Service-mix similarityView profile →

S. Christopher Malaisrie, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
26%Service-mix similarityView profile →

Kalvin Cheuk Hang Lung, M.D., M.SC.

Cardiac Surgery · Thoracic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
23%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.