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Compare the published Medicare service mix of Charles Sierzant, M.D. with clinicians in the same registry specialty: Emergency Medicine.

GRAND RAPIDS, MI · Exact areaEdit location

2024 published service data · 129 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Meredith Johanna Busman, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
99%Service-mix similarityView profile →

Daniel J Mercier, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
99%Service-mix similarityView profile →

Kaitlyn Beels, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
86%Service-mix similarityView profile →

Kyle Matthew Sherwin, DO

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
85%Service-mix similarityView profile →

Craig M Bilbrey, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
83%Service-mix similarityView profile →

David Tetsuji Ishiyama, M.D.

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
79%Service-mix similarityView profile →

Sara Jane Hinkley, D.O.

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
76%Service-mix similarityView profile →

Nathan Fritz, D.O.

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
76%Service-mix similarityView profile →

Thomas Peterson, M.D.

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
75%Service-mix similarityView profile →

Alexandra Barshied, M.D.

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
75%Service-mix similarityView profile →

Samuel Blake Kluger, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
75%Service-mix similarityView profile →

Deanna M Deschler, MD

Emergency Medicine · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
75%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.