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Compare the published Medicare service mix of Charles Anders Johnson, M.D. with clinicians in the same registry specialty: Ophthalmology.

TX · 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.

Gowri Pachigolla, MD

Ophthalmology · Cedar Hill, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
90%Service-mix similarityView profile →

Thad David Hardin, M. D.

Ophthalmology · Athens, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
90%Service-mix similarityView profile →

Maheen Haque, M.D.

Ophthalmology · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
89%Service-mix similarityView profile →

Jonathan Chase Welch, MD

Ophthalmology · San Marcos, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
89%Service-mix similarityView profile →

Jon Mark Berry, M.D.

Ophthalmology · Live Oak, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
89%Service-mix similarityView profile →

Richard W Jolly, M.D.

Ophthalmology · Gainesville, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Aaron Pittard, MD

Ophthalmology · Amarillo, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Naja Chisty, DO

Ophthalmology · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Thomas E Marshall, MD

Ophthalmology · Baytown, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Steven J Fisher, M.D.

Ophthalmology · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Andrew Jones Mastro, MD

Ophthalmology · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Timothy Peterson Lindquist, MD

Ophthalmology · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
88%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.