Brian D Kastner, MD
Radiation Oncology (CMS) · East Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
99%Service-mix similarity~65.4 milesView profile →
Similar work.
More providers to explore.
Compare the published Medicare service mix of Eric P Buth, MD with clinicians in the same registry specialty: Radiation Oncology (CMS).
REED CITY, MI · 100 milesEdit location
Within 100 miles · Approximate ZIP-area distance
Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works
2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.
Michael L Mahacek, MD
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
95%Service-mix similarity~64.0 milesView profile →
Matthew W Packard, M.D.
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
94%Service-mix similarity~64.0 milesView profile →
Patrick L Fabrizio, MD
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
93%Service-mix similarity~64.0 milesView profile →
Paul O Thieme, DO
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
92%Service-mix similarity~64.0 milesView profile →
Robert Spencer Kirkland, MD
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
88%Service-mix similarity~64.0 milesView profile →
David Michael Bergman, M.D.
Radiation Oncology (CMS) · Bay City, MI
Shared published services3 shared services · view billing descriptions
84%Service-mix similarity~80.2 milesView profile →
Gina Elizabeth Rebesco, MD
Radiation Oncology (CMS) · Grand Rapids, MI
Shared published services3 shared services · view billing descriptions
84%Service-mix similarity~64.0 milesView profile →
Aria Kieft, MD
Radiation Oncology (CMS) · Bay City, MI
Shared published services3 shared services · view billing descriptions
84%Service-mix similarity~80.2 milesView profile →
Jennifer L Webb, MD
Specialty details in registry · Lansing, MI
Shared published services3 shared services · view billing descriptions
80%Service-mix similarity~95.2 milesView profile →
James A Fugazzi, M.D,
Radiation Oncology (CMS) · Saginaw, MI
Shared published services3 shared services · view billing descriptions
78%Service-mix similarity~83.1 milesView profile →
Isaac Kaufman, M.D.
Radiation Oncology (CMS) · Traverse City, MI
Shared published services3 shared services · view billing descriptions
77%Service-mix similarity~56.4 milesView 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 approximate distance 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.