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Compare the published Medicare service mix of Katayoun Rezai, M.D. with clinicians in the same registry specialty: Infectious Disease · Internal Medicine (CMS).

CHICAGO, IL · Exact areaEdit location

2024 published service data · 115 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Vanessa Sarda, M.D.

Infectious Disease (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)
100%Service-mix similarityView profile →

Erin Beisner Shanker, MD, PHD

Internal Medicine (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)
100%Service-mix similarityView profile →

Sudhir Penugonda, M.D.

Infectious Disease · Internal Medicine (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)
75%Service-mix similarityView profile →

Mahesh C. Patel, M.D.

Infectious Disease · Internal Medicine (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)
75%Service-mix similarityView profile →

Susan Pacheco, MD

Infectious Disease · Internal Medicine (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)
69%Service-mix similarityView profile →

Egon Anderson Ozer, M.D.

Infectious Disease · Internal Medicine (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)
68%Service-mix similarityView profile →

Gary Noskin, MD

Infectious Disease (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)
67%Service-mix similarityView profile →

Steven James Fisher, M.D.

Infectious Disease (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)
65%Service-mix similarityView profile →

Scott Ambrose Borgetti, M.D.

Infectious Disease (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)
64%Service-mix similarityView profile →

Kelly E. R. Bachta, MD, PHD

Infectious Disease · Internal Medicine (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)
63%Service-mix similarityView profile →

Patricia Daniella Zuccaro, M.D.

Infectious Disease (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)
62%Service-mix similarityView profile →

Endale T Mekonen, M.D.

Infectious Disease · Internal Medicine (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)
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.