A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of John P Fang, M.D. with clinicians in the same registry specialty: Ophthalmology.

VENTURA, CA · Exact areaEdit location

2024 published service data · 12 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Vladislav Bekerman, MD

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Microfluid analysis of tears (83861)
  • Analysis of substance using immunoassay technique, multiple step method (83516)
  • Established patient problem focused exam of visual system (92012)
92%Service-mix similarityView profile →

William Trotter, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Measurement of corneal curvature and depth of eye (92136)
73%Service-mix similarityView profile →

John Davidson, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Measurement of corneal curvature and depth of eye (92136)
63%Service-mix similarityView profile →

Steven David Chang, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Measurement of corneal curvature and depth of eye (92136)
60%Service-mix similarityView profile →

Jewel Liao, MD

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Microfluid analysis of tears (83861)
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
58%Service-mix similarityView profile →

Steven Lawrence Carter, MD

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Measurement of corneal curvature and depth of eye (92136)
58%Service-mix similarityView profile →

Leon G Partamian, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Imaging of optic nerve (92133)
55%Service-mix similarityView profile →

Bryant Jay Lum, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Microfluid analysis of tears (83861)
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
55%Service-mix similarityView profile →

Mauricio Enrique Vargas, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Measurement of corneal curvature and depth of eye (92136)
49%Service-mix similarityView profile →

Jeffrey K Luttrull, M.D

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Exam of visual field with extended testing (92083)
42%Service-mix similarityView profile →

Joel Michael Corwin, M.D.

Ophthalmology · Ventura, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
  • Imaging of optic nerve (92133)
38%Service-mix similarityView profile →

Noelene Kin Yun Pang

Ophthalmology · Ventura, CA

Shared published services
1 shared services · view billing descriptions
  • Exam of visual field with extended testing (92083)
6%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.