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Compare the published Medicare service mix of Diane Barbara Harris, MD 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.

Judith Gerring Street, M.D.

Psychiatry · San Francisco, 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 →

Seema Sehgal, M.D

Psychiatry · Fremont, 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)
99%Service-mix similarityView profile →

Shamala Vasant Kanchan, MD

Psychiatry · Saratoga, 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)
94%Service-mix similarityView profile →

Ashlee Blaine, DO

Psychiatry · Monterey, 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)
94%Service-mix similarityView profile →

Mark Fletcher Simonds, MD

Psychiatry · Mission Hills, 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)
93%Service-mix similarityView profile →

Edward Lee Spencer, M.D.

Psychiatry · Beverly Hills, 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)
88%Service-mix similarityView profile →

Juan Cristobal Rondeau, MD

Psychiatry · Gardena, 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)
88%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)
88%Service-mix similarityView profile →

Gregory Gene Mcgowan, M.D.

Psychiatry · Patton, 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)
88%Service-mix similarityView profile →

Sukanya Pillai Venkatachalam, M.D.

Psychiatry · Pleasanton, 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)
88%Service-mix similarityView profile →

Randolf Dwight Dipp, D.O.

Psychiatry · San Diego, 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)
88%Service-mix similarityView profile →

Rajan Gosain, M.D.

Psychiatry · Sacramento, 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)
88%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.