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Compare the published Medicare service mix of Sham Wen Singh, MD with clinicians in the same registry specialty: Psychiatry.

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 169 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ali Darius Aziz, MD

Psychiatry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
  • Psychotherapy with evaluation and management visit, 45 minutes (90836)
100%Service-mix similarityView profile →

Trung Tan Duong, MD

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
87%Service-mix similarityView profile →

Charles Telford Bell Mctavish, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
87%Service-mix similarityView profile →

Sarah Anh Nguyen, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
87%Service-mix similarityView profile →

Keerthan Somanath, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
86%Service-mix similarityView profile →

Bruce Laurence Kagan, MD

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
86%Service-mix similarityView profile →

Michael Jay Gitlin, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
81%Service-mix similarityView profile →

Arjun Kumar

Psychiatry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
  • Psychotherapy with evaluation and management visit, 45 minutes (90836)
80%Service-mix similarityView profile →

Jooyeon Lee, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
76%Service-mix similarityView profile →

John Hyde Altman, MD

Psychiatry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
  • Psychotherapy with evaluation and management visit, 45 minutes (90836)
76%Service-mix similarityView profile →

Steven Solomon Schenkel, MD

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
72%Service-mix similarityView profile →

Tammy Duong, M.D.

Psychiatry · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Psychotherapy with evaluation and management visit, 30 minutes (90833)
71%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.