A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Kimberly Castillo, OD with clinicians in the same registry specialty: Optometrist.

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Joseph Quoc Bui, OD

Optometrist · Dinuba, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
89%Service-mix similarityView profile →

Moses Thai, OD

Optometrist · Dinuba, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
83%Service-mix similarityView profile →

Kimberly Machele Lyons, OD

Optometrist · Windsor, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
79%Service-mix similarityView profile →

Allen Jay Denison, O.D.

Optometrist · Visalia, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
79%Service-mix similarityView profile →

Marcus Henri Appy, O.D.

Optometrist · Arcata, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
78%Service-mix similarityView profile →

Samuel Johnson, OD

Optometrist · Arcata, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
77%Service-mix similarityView profile →

Steven D Holmstrom, O.D.

Optometrist · Canyon Lake, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • New patient complete exam of visual system (92004)
76%Service-mix similarityView profile →

Carol Aivazian, O.D.

Optometrist · Valencia, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • New patient complete exam of visual system (92004)
76%Service-mix similarityView profile →

Makenna Alexandra Hartzell, OD

Optometrist · Roseville, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Imaging of retina (92134)
75%Service-mix similarityView profile →

Nikhil Singh Brar, OD

Optometrist · Visalia, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Imaging of retina (92134)
75%Service-mix similarityView profile →

Steven Mala Kas, O.D.

Optometrist · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • New patient complete exam of visual system (92004)
74%Service-mix similarityView profile →

Eric Ivars Richman, OD

Optometrist · Bishop, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
74%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.