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Similar work.
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Compare the published Medicare service mix of Robert Ansley Roof, D.O. with clinicians in the same registry specialty: Emergency Medicine.

WATERLOO, IA · Exact areaEdit location

2024 published service data · 12 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Orietta Girard, M.D.

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
70%Service-mix similarityView profile →

Brandon Beauchamp, DO

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
70%Service-mix similarityView profile →

Rickie Griffith, DO

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
66%Service-mix similarityView profile →

Brian Harold Cunningham, M.D.

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
64%Service-mix similarityView profile →

Nicholas Wade Stull, D.O.

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
61%Service-mix similarityView profile →

Robert A. Mott, D.O.

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
57%Service-mix similarityView profile →

William Paul Fangman, MD

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
56%Service-mix similarityView profile →

Katie R Baker, DO

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
55%Service-mix similarityView profile →

Todd K Lawrence, M.D.

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
53%Service-mix similarityView profile →

Jens Masters Olsen, MD

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
50%Service-mix similarityView profile →

Stacey Marie Marlow Fisher, MD, JD

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
48%Service-mix similarityView profile →

Joseph Kwofie, DO

Emergency Medicine · Waterloo, IA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
45%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.