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Compare the published Medicare service mix of Shirley Chio, O.D. with clinicians in the same registry specialty: Optometrist.

VENTURA, CA · Exact areaEdit location

2024 published service data · 22 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael Boggs, O.D.

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
  • New patient complete exam of visual system (92004)
90%Service-mix similarityView profile →

John Ora, OD

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
  • Exam of visual field with extended testing (92083)
89%Service-mix similarityView profile →

Tu Nghi Nguyen, O.D.

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
  • New patient complete exam of visual system (92004)
82%Service-mix similarityView profile →

Doanh Nguyen, O.D.

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
  • New patient complete exam of visual system (92004)
74%Service-mix similarityView profile →

Claire Michele Azzam, OD

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
  • New patient complete exam of visual system (92004)
73%Service-mix similarityView profile →

Stephen Langsford, O.D.

Optometrist · Ventura, 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)
71%Service-mix similarityView profile →

Terry Yu, OD

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of visual field with extended testing (92083)
  • New patient complete exam of visual system (92004)
67%Service-mix similarityView profile →

Gary Frank Strickland, O.D.

Optometrist · Ventura, 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)
59%Service-mix similarityView profile →

Ona Mae Reiko Shiroyama, O.D.

Optometrist · Ventura, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
58%Service-mix similarityView profile →

Brent Kenji Mitsuuchi, O.D.

Optometrist · Ventura, 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)
58%Service-mix similarityView profile →

Rebekah Renee Klein, OD

Optometrist · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of visual field with extended testing (92083)
  • New patient complete exam of visual system (92004)
57%Service-mix similarityView profile →

Mark Brunette, O.D.

Optometrist · Ventura, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Established patient problem focused exam of visual system (92012)
56%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.