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Compare the published Medicare service mix of Alexandra Dimitrova, M.D. with clinicians in the same registry specialty: Neurology.

PORTLAND, OR · Exact areaEdit location

2024 published service data · 87 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lisa Carolyn Silbert, MD

Neurology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)
  • Placement of skin electrodes and measurement of central motor stimulation in arms and legs (95939)
82%Service-mix similarityView profile →

Barry Steven Oken, MD

Neurology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)
  • Placement of skin electrodes and measurement of central motor stimulation in arms and legs (95939)
73%Service-mix similarityView profile →

Paul Motika, M.D.

Neurology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Continuous intraoperative neurophysiology monitoring, from outside the operating room (remote or nearby), per patient, (attention directed exclusively to one patient) each 15 minutes (list in addition to primary procedure) (G0453)
  • Placement of skin electrodes and measurement of stimulated sites on arms and legs (95938)
  • Placement of skin electrodes and measurement of central motor stimulation in arms and legs (95939)
69%Service-mix similarityView profile →

Chafic Karam, M.D.

Neurology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Testing of autonomic (sympathetic) nervous system function (95923)
  • Testing of autonomic (sympathetic and parasympathetic) nervous system function, at least 5 minutes of tilt (95924)
18%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.