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Compare the published Medicare service mix of Don G Koepsell, MD PHD with clinicians in the same registry specialty: Ophthalmology.

PA · 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.

Igor L Benenson, D.O., M.D., PH.D.

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
72%Service-mix similarityView profile →

Salvatore Desimone, DO

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
71%Service-mix similarityView profile →

Steven J Kanoff, M.D.

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
69%Service-mix similarityView profile →

Gregory Warren Oldham, M.D.

Ophthalmology · West Chester, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

Vincent Basan Lam, M.D.

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

Courtland M Schmidt, M.D.

Ophthalmology · Bala Cynwyd, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

Walter Harris, M.D.

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

Jeffrey Mcmahon, M.D.

Ophthalmology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

Kristina Yi-Hwa Pao, MD

Ophthalmology · Thorndale, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
68%Service-mix similarityView profile →

John Justin Ruffini, M.D.

Ophthalmology · Ridley Park, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
67%Service-mix similarityView profile →

Salwa Abdel-Aziz, MD

Ophthalmology · Pittsburgh, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
67%Service-mix similarityView profile →

Jennifer Ruth Lynn, MD

Ophthalmology · Ardmore, PA

Shared published services
3 shared services · view billing descriptions
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient complete exam of visual system (92014)
67%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.