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Similar work.
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Compare the published Medicare service mix of Marwan A Nasir, M.D. with clinicians in the same registry specialty: Pathology (CMS).

HOUSTON, TX · Exact areaEdit location

2024 published service data · 249 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Atin Agarwal

Pathology (CMS) · Houston, TX

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)
96%Service-mix similarityView profile →

Sue Jin Sim, MD

Pathology (CMS) · Houston, TX

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)
93%Service-mix similarityView profile →

Tracie Michelle Koen, M.D.

Pathology (CMS) · Houston, TX

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)
93%Service-mix similarityView profile →

Steven J. O'connor, M.D.

Pathology (CMS) · Houston, TX

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)
91%Service-mix similarityView profile →

Diego Fiorito, M.D.

Pathology (CMS) · Houston, TX

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)
91%Service-mix similarityView profile →

Ekene Ifeyinwa Okoye, M.D

Pathology (CMS) · Houston, TX

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)
91%Service-mix similarityView profile →

Bonnie L Kemp, MD PHD

Pathology (CMS) · Houston, TX

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)
91%Service-mix similarityView profile →

Mei Lin, M.D.

Pathology (CMS) · Houston, TX

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)
91%Service-mix similarityView profile →

Polly King Gauthier, M.D.

Pathology (CMS) · Houston, TX

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)
90%Service-mix similarityView profile →

Ognjen Kosarac, M.D.

Pathology (CMS) · Houston, TX

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)
90%Service-mix similarityView profile →

Kristina Leigh Burt, M.D.

Pathology (CMS) · Houston, TX

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)
90%Service-mix similarityView profile →

Li Liang, M.D./PH.D.

Pathology (CMS) · Houston, TX

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)
90%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.