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Compare the published Medicare service mix of Carmen F Castellano, 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.

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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Removal of cataract with insertion of prosthetic lens (66984)
88%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)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Removal of cataract with insertion of prosthetic lens (66984)
86%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)
  • Imaging of optic nerve (92133)
65%Service-mix similarityView profile →

Jaclyn Lopez Szewczyk, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
65%Service-mix similarityView profile →

Maria Nguyen Tantsits, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
64%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)
  • Imaging of optic nerve (92133)
64%Service-mix similarityView profile →

Barbara A Aalbers, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
64%Service-mix similarityView profile →

Sara Mahshid Serati, 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)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
62%Service-mix similarityView profile →

Sonia Salas, 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)
  • Exam of visual field with extended testing (92083)
61%Service-mix similarityView profile →

Alaina Altenbernd, 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)
  • Imaging of optic nerve (92133)
60%Service-mix similarityView profile →

Shannon Niere, O.D.

Optometrist · Saint Louis, MO

Shared published services
1 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)
59%Service-mix similarityView profile →

James R Hoekel, OD

Optometrist · Saint Louis, MO

Shared published services
1 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)
59%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.