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Compare the published Medicare service mix of Mark Edward Pennesi, MD PHD with clinicians in the same registry specialty: Ophthalmology.

PORTLAND, OR · Exact areaEdit location

2024 published service data · 51 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Paul Yang, M.D., PH.D.

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
65%Service-mix similarityView profile →

Andrea Olsen D'ostroph, M.D.

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
56%Service-mix similarityView profile →

Jennifer L Lyons, MD

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
50%Service-mix similarityView profile →

Seema R Gupta, MD

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
45%Service-mix similarityView profile →

Ellen Jean Davis, MD

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
44%Service-mix similarityView profile →

Jeffrey Mark Healey, M.D.

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
42%Service-mix similarityView profile →

David Sebastian Sanders, MD, MPH

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
40%Service-mix similarityView profile →

Jennifer Lanay Balentine, MD

Ophthalmology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
37%Service-mix similarityView profile →

Aazim Siddiqui

Ophthalmology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
37%Service-mix similarityView profile →

Jonathan Robert Kemp, MD

Ophthalmology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
37%Service-mix similarityView profile →

Sonal B. Dave, M.D.

Ophthalmology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Exam of visual field with extended testing (92083)
  • Established patient complete exam of visual system (92014)
36%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.