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Compare the published Medicare service mix of Tanya K Mahaphon, O.D. with clinicians in the same registry specialty: Optometry (CMS).

CA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Leanne M Liddicoat, O.D.

Optometry (CMS) · Roseville, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
100%Service-mix similarityView profile →

Gary Sneag, O.D.,F.C.O.V.D.

Optometry (CMS) · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
100%Service-mix similarityView profile →

Gina Maria Day, O.D.

Specialty details in registry · Larkspur, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
100%Service-mix similarityView profile →

Stephen Russell Chun, OD, FAAO

Optometry (CMS) · Berkeley, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
71%Service-mix similarityView profile →

Allison Hongdiep Cao-Le, O D

Optometry (CMS) · Monterey, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
66%Service-mix similarityView profile →

Brenda S Coen, O.D.

Optometry (CMS) · Citrus Heights, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
59%Service-mix similarityView profile →

Lisa Michelle Weiss, O.D.

Optometry (CMS) · Rancho Santa Fe, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
50%Service-mix similarityView profile →

Elizabeth Hayes Harvey

Optometry (CMS) · Fort Bragg, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
49%Service-mix similarityView profile →

Jennifer Ngai Yen Tam, O.D.

Optometry (CMS) · La Mesa, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
48%Service-mix similarityView profile →

Cornelius Mietus, O.D.

Optometry (CMS) · Santa Barbara, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
47%Service-mix similarityView profile →

Douglas L Major, O.D.

Optometry (CMS) · Paso Robles, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
44%Service-mix similarityView profile →

Johann Josue Schlager, OD

Optometry (CMS) · Merced, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
43%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.