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Compare the published Medicare service mix of Nathash S. Kallichanda, M.D. with clinicians in the same registry specialty: Pathology (CMS).

CA · Exact areaEdit location

2024 published service data · 159 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Evelyn B Choo, M.D.

Pathology (CMS) · Loma Linda, CA

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)
88%Service-mix similarityView profile →

Chelsea Heimbaugh

Pathology (CMS) · Loma Linda, CA

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)
84%Service-mix similarityView profile →

Sarah Margaret Dry, MD

Pathology (CMS) · Los Angeles, CA

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)
83%Service-mix similarityView profile →

Zoltan Nagymanyoki, M.D., PH.D.

Pathology (CMS) · San Luis Obispo, CA

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)
83%Service-mix similarityView profile →

John Michael Gonzales, M.D.

Specialty details in registry · San Jose, CA

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)
82%Service-mix similarityView profile →

Brandie Lauren Firetag, MD

Pathology (CMS) · San Luis Obispo, CA

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)
82%Service-mix similarityView profile →

Ravi K Raghavan, M.D.

Pathology (CMS) · Loma Linda, CA

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)
80%Service-mix similarityView profile →

Ivan Klement, MD

Pathology (CMS) · Santa Barbara, CA

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)
79%Service-mix similarityView profile →

Zhen Yan, MD, PHD

Pathology (CMS) · San Francisco, CA

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)
79%Service-mix similarityView profile →

Jeremy K. Deisch, MD

Pathology (CMS) · Loma Linda, CA

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)
79%Service-mix similarityView profile →

Kurt Barrett Schaberg, MD

Pathology (CMS) · Sacramento, CA

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)
79%Service-mix similarityView profile →

Mia Nepomuceno-Perez, M.D.

Pathology (CMS) · Loma Linda, CA

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 →
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.