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Compare the published Medicare service mix of Nerissa U. Ko, M.D. with clinicians in the same registry specialty: Neurology.

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 133 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Anthony S Kim, MD

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
71%Service-mix similarityView profile →

Wade Smith, MD

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of both sides of head and neck blood flow (93880)
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
69%Service-mix similarityView profile →

Scott A. Josephson, M.D.

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
62%Service-mix similarityView profile →

David C. Bonovich, M.D.

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
62%Service-mix similarityView profile →

Lauren Patrick

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Vanja Christopher Douglas, M.D.

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Lennox Emmanuel Byer

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Idelisse Ortiz Torres, MD PHD

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
56%Service-mix similarityView profile →

Megan Bye Richie, MD

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
56%Service-mix similarityView profile →

Vineeta Singh, M.D.

Neurology · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
53%Service-mix similarityView profile →

Michael Anthony Diaz

Neurology · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
53%Service-mix similarityView profile →

Jeffrey Marc Gelfand, M.D.

Neurology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • 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)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
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.