A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

SAN ANTONIO, TX · Exact areaEdit location

2024 published service data · 85 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Anhtuan Hoang Nguyen, MD

Ophthalmology · San Antonio, TX

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)
92%Service-mix similarityView profile →

Timothy Peterson Lindquist, MD

Ophthalmology · San Antonio, TX

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)
85%Service-mix similarityView profile →

Joshua Michael Iltis, MD

Ophthalmology · San Antonio, TX

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)
85%Service-mix similarityView profile →

John A Campagna, MD

Ophthalmology · San Antonio, TX

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)
84%Service-mix similarityView profile →

Michael Edmund Offutt, MD

Ophthalmology · San Antonio, TX

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)
84%Service-mix similarityView profile →

Daniel P Nolan, DO

Ophthalmology · San Antonio, TX

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)
83%Service-mix similarityView profile →

Nader G Iskander, MD

Ophthalmology · San Antonio, TX

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)
82%Service-mix similarityView profile →

Roger Allen Velasquez, M.D.

Ophthalmology · San Antonio, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of visual field with extended testing (92083)
  • Photography of the retina (92250)
81%Service-mix similarityView profile →

Jay Michel Rubin, M.D.

Ophthalmology · San Antonio, TX

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)
81%Service-mix similarityView profile →

Steven J Fisher, M.D.

Ophthalmology · San Antonio, TX

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)
81%Service-mix similarityView profile →

Corey William Waldman, M.D.

Ophthalmology · San Antonio, TX

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)
81%Service-mix similarityView profile →

Bruce L Winter, M.D.

Ophthalmology · San Antonio, TX

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)
81%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.