A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Zhanna Feldsher, M.D. with clinicians in the same registry specialty: Pediatrics.

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 11 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Eunice Valerie Rios, M.D.

Pediatrics · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
40%Service-mix similarityView profile →

Albert Lee Shim, MD

Pediatrics · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Injection of drug or substance under skin or into muscle (96372)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Urinalysis, manual test (81002)
34%Service-mix similarityView profile →

Nagy Khalil, M.D.

Pediatrics · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
26%Service-mix similarityView profile →

Ragaie Hakim, M.D

Pediatrics · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
25%Service-mix similarityView profile →

Ellen Lerner Rothman, M.D.

Pediatrics · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
17%Service-mix similarityView profile →

Yoon Sup Shin, M.D.

Pediatrics · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
16%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.