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Compare the published Medicare service mix of Etienne Schonbach, MD with clinicians in the same registry specialty: Ophthalmology.

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 68 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Nathan L Scott, MD, MPP

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Christopher Toomey, M.D., PH.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Injection of drug into eye (67028)
61%Service-mix similarityView profile →

Henry A Ferreyra, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Injection of drug into eye (67028)
51%Service-mix similarityView profile →

William R. Freeman, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Injection of drug into eye (67028)
51%Service-mix similarityView profile →

Atul Kumar Jain, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
50%Service-mix similarityView profile →

Reuben T. Yoo, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
49%Service-mix similarityView profile →

Jacob Sijie Heng, MD, PHD

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Injection of drug into eye (67028)
48%Service-mix similarityView profile →

Nikolas London, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Injection of drug into eye (67028)
48%Service-mix similarityView profile →

Karim V Zablit, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
44%Service-mix similarityView profile →

Manuel Puig-Llano, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
40%Service-mix similarityView profile →

Sidney Tan Chang, MD

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Exam of the internal drainage system of eye (92020)
38%Service-mix similarityView profile →

Anjali Sheena Parekh, M.D

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Exam of the internal drainage system of eye (92020)
38%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.