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Compare the published Medicare service mix of Sarah Lynn Ondrejka, D.O. with clinicians in the same registry specialty: Hematology · Pathology (CMS).

CLEVELAND, OH · Exact areaEdit location

2024 published service data · 79 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

James R Cook, M.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
95%Service-mix similarityView profile →

Rania Rayes-Danan, MD

Hematology · Pathology (CMS) · Cleveland, OH

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

Pedro Dsc Ciarlini, M.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
76%Service-mix similarityView profile →

Ziad Peerwani, M.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
64%Service-mix similarityView profile →

Erica Christine Savage, M.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
63%Service-mix similarityView profile →

Shaomin Hu, MD, PHD

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
62%Service-mix similarityView profile →

Steven Douglas Billings, M.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%Service-mix similarityView profile →

Heesun Rogers, MD

Hematology · Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%Service-mix similarityView profile →

Ram Al-Sabti

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%Service-mix similarityView profile →

Wadad Sami Mneimneh, MD

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%Service-mix similarityView profile →

Jason Daniel Chesser, M.D., PH.D.

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%Service-mix similarityView profile →

Marta Emma Couce, MD

Pathology (CMS) · Cleveland, OH

Shared published services
3 shared services · view billing descriptions
  • Special stained specimen slides to examine tissue, each additional procedure (88341)
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to examine tissue, initial procedure (88342)
61%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.