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Compare the published Medicare service mix of Nikolas London, M.D. 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.

Atul Kumar Jain, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
70%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)
  • Injection of drug into eye (67028)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
61%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)
  • Injection of drug into eye (67028)
  • 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 →

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

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • 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 →

Floyd Arthur Doughty, M.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • 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 →

Eric Daniel Nudleman, M.D., PH.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
55%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)
  • Injection of drug into eye (67028)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
54%Service-mix similarityView profile →

Carla Bess Berkowitz

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 low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
54%Service-mix similarityView profile →

Ryan Phan, MD

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
54%Service-mix similarityView profile →

Nathan L Scott, MD, MPP

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Established patient complete exam of visual system (92014)
53%Service-mix similarityView profile →

Lydia Marcella Tonantzin Torres, O.D.

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
53%Service-mix similarityView profile →

Paul Zheseng Lang, MD

Ophthalmology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient complete exam of visual system (92014)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
52%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.