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Compare the published Medicare service mix of Edward M Lai, MD with clinicians in the same registry specialty: Pathology (CMS).

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ashley J Tarasen, MD

Pathology (CMS) · Modesto, 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
90%Service-mix similarityView profile →

Ahmad Ibrahim, M.D.

Pathology (CMS) · Colton, CA

Shared published services
2 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to identify organisms including interpretation and report (88312)
81%Service-mix similarityView profile →

Michael Anthony Richardson, M.D.

Specialty details in registry · 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
80%Service-mix similarityView profile →

Sarka Cernosek, MD

Pathology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
77%Service-mix similarityView profile →

Ronald Gene England, D.O.

Pathology (CMS) · Redding, 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
74%Service-mix similarityView profile →

Catherine M Nicka, MD

Pathology (CMS) · Yreka, 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
74%Service-mix similarityView profile →

Alka R Kothari, MD

Pathology (CMS) · Norwalk, 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
73%Service-mix similarityView profile →

Rebecca Jung-Hee Sonu, MD

Specialty details in registry · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to identify organisms including interpretation and report (88312)
71%Service-mix similarityView profile →

Michael S Lewis, M.D.

Pathology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to identify organisms including interpretation and report (88312)
70%Service-mix similarityView profile →

Andy Chia-Wei Hsi, M.D.

Dermatology · Pathology (CMS) · Placentia, 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 identify organisms including interpretation and report (88312)
  • Pathology examination of tissue using a microscope, moderately low complexity (88304)
70%Service-mix similarityView profile →

Yasmin F. Qasim, MD

Pathology (CMS) · Bellflower, CA

Shared published services
2 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
  • Special stained specimen slides to identify organisms including interpretation and report (88312)
70%Service-mix similarityView profile →

Roger E Der, M.D.

Pathology (CMS) · Arcadia, 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 identify organisms including interpretation and report (88312)
  • Cell examination of body fluid, smears (88104)
68%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.