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Compare the published Medicare service mix of William Patrick Callahan, PA-C with clinicians in the same registry specialty: Physician Assistant.

FORT MYERS, FL · Exact areaEdit location

2024 published service data · 207 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian D. Brown, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
86%Service-mix similarityView profile →

Justin William Harlacher, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
57%Service-mix similarityView profile →

Joshua Clayton Lomen, P.A.

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
55%Service-mix similarityView profile →

Ian Charles Black, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
48%Service-mix similarityView profile →

Victoria Wagenknecht, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
35%Service-mix similarityView profile →

Bradley Neil Reid, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
32%Service-mix similarityView profile →

Ira S Saunders, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
32%Service-mix similarityView profile →

Stacy Wlliam Szczygiel, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
31%Service-mix similarityView profile →

Ashley Marie Minor, PA

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
31%Service-mix similarityView profile →

Rachel Michele Gomez, PA.

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
29%Service-mix similarityView profile →

Alexis R Thraen, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
27%Service-mix similarityView profile →

Robert Scott Gilbert, PA-C

Physician Assistant · Fort Myers, FL

Shared published services
1 shared services · view billing descriptions
  • Insertion of non-tunneled central venous tube for infusion (5 years or older) (36556)
26%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.