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Compare the published Medicare service mix of Richard A. A. Day, MD with clinicians in the same registry specialty: Neurosurgery (CMS).

MT · Exact areaEdit location

2024 published service data · 24 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Carter E Beck, MD

Neurosurgery (CMS) · Missoula, MT

Shared published services
3 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Fusion of lower spine bone and partial removal of spine bone or disc through back, 1 disc (22630)
  • Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back (63052)
54%Service-mix similarityView profile →

Michael A. Morone, MD

Neurosurgery (CMS) · Billings, MT

Shared published services
2 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back (63052)
31%Service-mix similarityView profile →

Marlin Dustin Richardson, MD

Neurosurgery (CMS) · Billings, MT

Shared published services
2 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back (63052)
29%Service-mix similarityView profile →

Christopher Evan Stewart

Neurology · Neurosurgery (CMS) · Billings, MT

Shared published services
2 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
  • Placement of stabilizing device to back of 1 spine bone in neck (22840)
26%Service-mix similarityView profile →

Kenneth C Brewington, MD

Neurosurgery (CMS) · Missoula, MT

Shared published services
1 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
22%Service-mix similarityView profile →

Joshua Lee Ryan Krass, D.O.

Neurosurgery (CMS) · Kalispell, MT

Shared published services
1 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
15%Service-mix similarityView profile →

Louis Voelkel Ross, M.D.

Neurosurgery (CMS) · Billings, MT

Shared published services
1 shared services · view billing descriptions
  • Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)
14%Service-mix similarityView profile →

John G Van Gilder, MD

Neurosurgery (CMS) · Great Falls, MT

Shared published services
1 shared services · view billing descriptions
  • Placement of stabilizing device to back of 1 spine bone in neck (22840)
11%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.