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Compare the published Medicare service mix of Steven Donald Smith, AN OPTOMETRIC CORP with clinicians in the same registry specialty: Optometrist.

RANCHO SANTA MARGARITA, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 35 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ashkan Tavakoli Isfahani, OD

Optometrist · Laguna Woods, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
100%Service-mix similarity~8.1 milesView profile →

Tony C Lieu, OD

Optometrist · Corona, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
100%Service-mix similarity~9.9 milesView profile →

Randall Keith Wong, OD

Optometrist · Mission Viejo, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
84%Service-mix similarity~4.7 milesView profile →

Stephen Kay Christensen, OD

Optometrist · Lake Forest, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
75%Service-mix similarity~5.4 milesView profile →

Aaron Michael Sako, O.D.

Optometrist · Laguna Hills, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
74%Service-mix similarity~7.3 milesView profile →

David J Chu, O.D.

Optometrist · Aliso Viejo, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
67%Service-mix similarity~8.7 milesView profile →

Stacy Jones, O.D.

Optometrist · Ladera Ranch, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
65%Service-mix similarity~7.4 milesView profile →

Wendy U Tran, O.D.

Optometrist · Laguna Hills, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
62%Service-mix similarity~7.3 milesView profile →

Lindsey Van, OD

Optometrist · Lake Forest, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
54%Service-mix similarity~5.4 milesView profile →

Julie Wong, O.D.

Optometrist · Laguna Hills, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
54%Service-mix similarity~7.3 milesView profile →

Teri Lynn Alpert, OD

Optometrist · Mission Viejo, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
52%Service-mix similarity~3.8 milesView profile →

Fabian I Luna, O.D.

Optometrist · Mission Viejo, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
50%Service-mix similarity~4.7 milesView 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 approximate distance 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.