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Similar work.
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Compare the published Medicare service mix of Charles Tu, OD with clinicians in the same registry specialty: Optometrist.

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 80 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John F Kulischak, OD

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
99%Service-mix similarityView profile →

Samuel Milton White, OD

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
85%Service-mix similarityView profile →

Matthew Langford, O.D.

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
81%Service-mix similarityView profile →

Eric M White, OD

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
81%Service-mix similarityView profile →

Christine Thiem, OD

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
81%Service-mix similarityView profile →

Theresa Floresca, O.D.

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
81%Service-mix similarityView profile →

Debra Lynn Mcintyre, O.D.

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
80%Service-mix similarityView profile →

David I Geffen, O.D.

Optometrist · San Diego, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
78%Service-mix similarityView profile →

Shan Ma, OD

Optometrist · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
77%Service-mix similarityView profile →

Cassandra Jean Thompson, O.D.

Optometrist · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
77%Service-mix similarityView profile →

Keith Michael Wan, O.D.

Optometrist · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
77%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.