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

CHICO, CA · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Eric Clarke, OD

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
80%Service-mix similarityView profile →

Anna Mary Griffith, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
74%Service-mix similarityView profile →

Jennifer Marie Levine, OD

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
73%Service-mix similarityView profile →

Steven Warne, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
71%Service-mix similarityView profile →

Craig Allan Montgomery, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
65%Service-mix similarityView profile →

Michael James Merry, OD

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
63%Service-mix similarityView profile →

Dylan Franchi, OD

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
62%Service-mix similarityView profile →

Jonathan Eric Mennucci, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • New patient complete exam of visual system (92004)
61%Service-mix similarityView profile →

Ryan Vikesland, OD

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
  • Established patient problem focused exam of visual system (92012)
61%Service-mix similarityView profile →

Amy V. Spanfelner, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient complete exam of visual system (92004)
  • Photography of the retina (92250)
53%Service-mix similarityView profile →

Douglas Richard Myers, O.D.

Optometrist · Chico, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Imaging of optic nerve (92133)
  • Exam of visual field with extended testing (92083)
49%Service-mix similarityView profile →

Marina Lucille Rocchi, O.D.

Optometrist · Chico, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
34%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.