A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Ahren Charles Rittershaus, M.D. with clinicians in the same registry specialty: Pathology (CMS).

RALEIGH, NC · Exact areaEdit location

2024 published service data · 17 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Eric Christopher Statz, MD

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
96%Service-mix similarityView profile →

Ryan Christopher Johnson, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
92%Service-mix similarityView profile →

Shrinivas Rajagopalan, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
91%Service-mix similarityView profile →

Laila Nomani, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
91%Service-mix similarityView profile →

Maria Georgina Uberti, M.D

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
91%Service-mix similarityView profile →

Jeremy Thomas Spencer, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
91%Service-mix similarityView profile →

Matthew James Snyder, M.D.

Hematology · Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
89%Service-mix similarityView profile →

Vincent Charles Smith, MD

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
81%Service-mix similarityView profile →

Fumiko Catrina Reading, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
78%Service-mix similarityView profile →

Preeti Parekh, MD

Hematology · Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
72%Service-mix similarityView profile →

George H Clarke, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
70%Service-mix similarityView profile →

Kimberly Frances Ingersoll, M.D.

Pathology (CMS) · Raleigh, NC

Shared published services
3 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
69%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.