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Compare the published Medicare service mix of Alexander Joseph Neilson, DO with clinicians in the same registry specialty: Anesthesiology.

CO · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Kymberlee Royals, M.D.

Anesthesiology · Fort Collins, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Louisa Elizabeth Phillips, MD

Anesthesiology · Greenwood Village, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Steven John Sara, M.D.

Anesthesiology · Greenwood Village, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Shaina Michelle Richardson, M.D.

Anesthesiology · Aurora, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Katharine Heffner, MD

Anesthesiology · Colorado Springs, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Derek Herra, MD

Anesthesiology · Lakewood, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Brent A Brumfield, MD

Anesthesiology · Pueblo, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Thomas Lanfear Griffiths, MD

Anesthesiology · Denver, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
71%Service-mix similarityView profile →

Benjamin Aaron Abrams, MD

Anesthesiology · Aurora, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
57%Service-mix similarityView profile →

Lyndsey Christine Monfort Grae, MD

Anesthesiology · Aurora, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
56%Service-mix similarityView profile →

Samantha Lauryn Hodapp, MD

Anesthesiology · Boulder, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
53%Service-mix similarityView profile →

Ian Holmen, MD

Anesthesiology · Aurora, CO

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
53%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.