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Compare the published Medicare service mix of John Matthew Alexander, MD with clinicians in the same registry specialty: Ophthalmology (CMS).

NY · Exact areaEdit location

2024 published service data · 92 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian Ira Collet, M.D.

Ophthalmology (CMS) · Howard Beach, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Imaging of optic nerve (92133)
70%Service-mix similarityView profile →

Alice Wong

Ophthalmology (CMS) · Poughkeepsie, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
62%Service-mix similarityView profile →

Allie Nadelson, MD

Ophthalmology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Imaging of optic nerve (92133)
62%Service-mix similarityView profile →

Samer Farah, MD

Ophthalmology (CMS) · Bronx, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
60%Service-mix similarityView profile →

Steven A Teich, MD

Ophthalmology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
59%Service-mix similarityView profile →

Jonathan Sheindlin, M.D.

Ophthalmology (CMS) · Bronx, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Imaging of optic nerve (92133)
57%Service-mix similarityView profile →

Norman Saffra, MD

Ophthalmology (CMS) · Brooklyn, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
57%Service-mix similarityView profile →

Gennady Landa, M.D.

Ophthalmology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
56%Service-mix similarityView profile →

Naima Gila Zilkha, M.D.

Ophthalmology (CMS) · West Islip, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
56%Service-mix similarityView profile →

Mhd Abdallah Mahrous, M.D.

Ophthalmology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
56%Service-mix similarityView profile →

Joseph Richard Podhorzer, M.D.

Ophthalmology (CMS) · Brooklyn, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
55%Service-mix similarityView profile →

Spencer Langevin, M.D.

Ophthalmology (CMS) · Slingerlands, NY

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Imaging of optic nerve (92133)
53%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.