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Compare the published Medicare service mix of Andrew O'reilly, DO with clinicians in the same registry specialty: Orthopedic Surgery (CMS).

OAK LAWN, IL · 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 · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Korey Douglas Partenheimer, D.O.

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
63%Service-mix similarity~6.0 milesView profile →

Nishitkumar S Patel, M.D.

General Surgery · Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
61%Service-mix similarity~6.6 milesView profile →

Sara J Wallace

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
52%Service-mix similarity~6.0 milesView profile →

Hany Bedair, MD

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
51%Service-mix similarity~8.3 milesView profile →

Cameron Barton, M.D.

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
42%Service-mix similarity~8.3 milesView profile →

Brett R. Levine, MD, MS

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
40%Service-mix similarity~8.3 milesView profile →

Vasili Karas, M.D.

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Aspiration and/or injection of fluid from large joint (20610)
36%Service-mix similarity~8.3 milesView profile →

Yi-Loong Colin Woon, M.D.

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
33%Service-mix similarity~8.3 milesView profile →

Viktor Clifford Tollemar, MD

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
32%Service-mix similarity~8.3 milesView profile →

Denis Nam, M.D., M.SC.

Orthopedic Surgery (CMS) · Chicago, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Aspiration and/or injection of fluid from large joint (20610)
26%Service-mix similarity~8.3 milesView profile →

Tad Gerlinger, M.D.

Specialty details in registry · Chicago, IL

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Aspiration and/or injection of fluid from large joint (20610)
20%Service-mix similarity~8.3 milesView profile →

Jamil Shamari Kendall, MD

Orthopedic Surgery · Sports Medicine (CMS) · Palos Heights, 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)
18%Service-mix similarity~7.9 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.