A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Sandra M Davidson, O.D. with clinicians in the same registry specialty: Optometrist.

RIVERSIDE, CA · Exact areaEdit location

2024 published service data · 10 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Scott Nguyen, OD

Optometrist · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
74%Service-mix similarityView profile →

Vanessa Kashak, O.D.

Optometrist · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient complete exam of visual system (92014)
60%Service-mix similarityView profile →

Cheryl Marie Everitt, O.D.

Optometrist · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient complete exam of visual system (92014)
53%Service-mix similarityView profile →

Timothy James Doran, OD

Optometrist · Riverside, CA

Shared published services
2 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient complete exam of visual system (92014)
45%Service-mix similarityView profile →

Joseph Sik Pak, OD

Optometrist · Riverside, CA

Shared published services
3 shared services · view billing descriptions
  • Exam of visual field with extended testing (92083)
  • Imaging of optic nerve (92133)
  • Established patient complete exam of visual system (92014)
44%Service-mix similarityView profile →

Jennifer Hua, OD

Optometrist · Riverside, CA

Shared published services
2 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient complete exam of visual system (92014)
33%Service-mix similarityView profile →

Nathaniel Steven Olson, OD

Optometrist · Riverside, CA

Shared published services
2 shared services · view billing descriptions
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)
  • Established patient complete exam of visual system (92014)
29%Service-mix similarityView profile →

Carol Tillman, OD

Optometrist · Riverside, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
20%Service-mix similarityView profile →

Phuc Hong Quach, O.D.

Optometrist · Riverside, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
18%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.