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Compare the published Medicare service mix of Robert Ngo Berthold, M.D. with clinicians in the same registry specialty: Psychiatry.

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ronit Leona Chernobelsky, MD

Psychiatry · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Residence visit for established patient with straightforward medical decision making, per day, if using time, at least 15 minutes (99347)
40%Service-mix similarityView profile →

Neal Scott Edwards, MD

Psychiatry · Oakland, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
39%Service-mix similarityView profile →

Carla Farah Mandili, M.D.

Psychiatry · Palmdale, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
39%Service-mix similarityView profile →

Renee Arlene Sabshin, M.D.

Psychiatry · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
37%Service-mix similarityView profile →

Israel Katz, M.D.

Psychiatry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
35%Service-mix similarityView profile →

Michael Choi, M.D.

Psychiatry · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
34%Service-mix similarityView profile →

Emily Anne Bost-Baxter, MD

Psychiatry · Culver City, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
31%Service-mix similarityView profile →

Xin Kang, M.D.

Psychiatry · Cerritos, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
29%Service-mix similarityView profile →

Cynthia A Janes, MD

Psychiatry · Saint Helena, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
29%Service-mix similarityView profile →

Burton Alan Presberg, MD

Psychiatry · Oakland, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
28%Service-mix similarityView profile →

An Thien Phan, M.D.

Psychiatry · Sacramento, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
27%Service-mix similarityView profile →

Lucy Pei-Ju Liao, M.D.

Psychiatry · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Telephone medical discussion with physician, 11-20 minutes (99442)
27%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.