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Compare the published Medicare service mix of David F Williams, MD with clinicians in the same registry specialty: Ophthalmology (CMS).

MN · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jacob Michael Jones, M.D.

Ophthalmology (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
92%Service-mix similarityView profile →

Abdhish Raman Bhavsar, M.D.

Ophthalmology (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
90%Service-mix similarityView profile →

Michael Vaughn Emerson, MD

Ophthalmology (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
90%Service-mix similarityView profile →

Geoffrey Guy Emerson, MD

Ophthalmology (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
89%Service-mix similarityView profile →

Yevgeniy Vladimirovich Sychev, M.D.

Ophthalmology (CMS) · Minneapolis, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
88%Service-mix similarityView profile →

Paul Michael Drayna, M.D.

Ophthalmology (CMS) · Edina, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
79%Service-mix similarityView profile →

Richard H Johnston, MD

Ophthalmology (CMS) · Edina, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
69%Service-mix similarityView profile →

Marni G Feldmann, MD

Ophthalmology (CMS) · Golden Valley, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
68%Service-mix similarityView profile →

Alexander Lyle Ringeisen, M.D.

Ophthalmology (CMS) · Woodbury, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
64%Service-mix similarityView profile →

Mehdi Roozbahani, MD

Ophthalmology (CMS) · Bloomington, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient problem focused exam of visual system (92012)
59%Service-mix similarityView profile →

Omar Dajani, M.D.

Ophthalmology (CMS) · St Louis Park, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Exam of retinal blood vessels using a special camera after injection of a dye (92235)
57%Service-mix similarityView profile →

Lulwa El Zein

Ophthalmology (CMS) · Rochester, MN

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Exam of retinal blood vessels using a special camera after injection of a dye (92235)
54%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.