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Compare the published Medicare service mix of Joel Nilles, D.O. with clinicians in the same registry specialty: Specialty details in registry.

IL · Exact areaEdit location

2024 published service data · 48 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Stephen E. Chester, D.O.

Emergency Medicine (CMS) · Palos Heights, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
85%Service-mix similarityView profile →

Kimberly D Orlob, MD

Emergency Medicine (CMS) · Arlington Heights, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
85%Service-mix similarityView profile →

Kathleen I Papazian, DO

Emergency Medicine (CMS) · Mchenry, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
84%Service-mix similarityView profile →

William Walsh, M.D.

Emergency Medicine (CMS) · Evergreen Park, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
84%Service-mix similarityView profile →

Steve R Edelstein, MD

Emergency Medicine (CMS) · Chicago, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
78%Service-mix similarityView profile →

Berry Lewis, M.D.

Emergency Medicine (CMS) · Evergreen Park, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
77%Service-mix similarityView profile →

Ashley Jo Martin, MD

Specialty details in registry · Quincy, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
77%Service-mix similarityView profile →

Elizabeth Horvath, DO

Emergency Medicine (CMS) · Barrington, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
77%Service-mix similarityView profile →

Anis Adnani, MD

Emergency Medicine (CMS) · Park Ridge, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
75%Service-mix similarityView profile →

Claudine S Feliciano, D.O

Emergency Medicine (CMS) · Joliet, IL

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
74%Service-mix similarityView profile →

John Ellis Williamson, D.O.

Emergency Medicine (CMS) · Morris, IL

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
74%Service-mix similarityView profile →

Michael Peters, MD

Specialty details in registry · Lake Forest, IL

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
74%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.