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Compare the published Medicare service mix of Arthur Chou, DO with clinicians in the same registry specialty: Emergency Medicine.

SPRINGFIELD, IL · Exact areaEdit location

2024 published service data · 70 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Katherine D Anderson, D.O.

Emergency Medicine · Springfield, 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)
100%Service-mix similarityView profile →

Robert H Viaille, MD

Emergency Medicine · Springfield, 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)
100%Service-mix similarityView profile →

Kelly Galanos, M.D.

Emergency Medicine · Springfield, 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)
100%Service-mix similarityView profile →

Gary Hendricks, MD

Emergency Medicine · Springfield, 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)
100%Service-mix similarityView profile →

Robert Sliwa, D.O.

Emergency Medicine · Springfield, 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)
92%Service-mix similarityView profile →

Chandler Fletcher Cox, MD

Emergency Medicine · Springfield, 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)
92%Service-mix similarityView profile →

Clinton R Holaday

Emergency Medicine · Springfield, 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)
91%Service-mix similarityView profile →

Jonathan E. Dela Cruz, M.D.

Emergency Medicine · Springfield, 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)
91%Service-mix similarityView profile →

Marit Susan Tweet, M.D.

Emergency Medicine · Springfield, 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)
90%Service-mix similarityView profile →

Richard Austin, M.D.

Emergency Medicine · Springfield, 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)
90%Service-mix similarityView profile →

Erica Cacioppo, MD

Emergency Medicine · Springfield, 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)
90%Service-mix similarityView profile →

Timothy Harvey, M.D.

Emergency Medicine · Springfield, 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)
90%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.