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Compare the published Medicare service mix of Anna Koblik Chen, MD with clinicians in the same registry specialty: Neurology · Psychiatry (CMS).

MARINA DEL REY, CA · Exact areaEdit location

2024 published service data · 1 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Daniel Vitantonio, MD

Neurology (CMS) · Marina Del Rey, CA

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)
  • Needle measurement of electrical activity in arm or leg muscles, 2 extremities (95861)
95%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.