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

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 98 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Paige Benten Diepenbrock, OD

Optometrist · Saint Louis, MO

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
86%Service-mix similarityView profile →

Karla Hafford, OD

Optometrist · Saint Louis, MO

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
85%Service-mix similarityView profile →

John Arthur Mcgreal, OD

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
76%Service-mix similarityView profile →

Stephanie C. Long, OD

Optometrist · Saint Louis, MO

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
76%Service-mix similarityView profile →

Mark Andrew Kahrhoff, OD

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
76%Service-mix similarityView profile →

Erin Cleary Sullivan, OD

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
76%Service-mix similarityView profile →

Steven J Grondalski, O.D.

Optometrist · Saint Louis, MO

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
73%Service-mix similarityView profile →

Teresa E Narayan, O.D.

Optometrist · Saint Louis, MO

Shared published services
2 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
72%Service-mix similarityView profile →

Matthew Clinton Schwamb, O.D.

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
72%Service-mix similarityView profile →

Nicholas A Castellano, OD

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Joseph Carmen Castellano, OD

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Jessica Carson Jones, O.D.

Optometrist · Saint Louis, MO

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)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
70%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.