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Compare the published Medicare service mix of Timothy I. Hsieh, MD with clinicians in the same registry specialty: Internal Medicine (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 58 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Laurence Katznelson, MD

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 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)
100%Service-mix similarityView profile →

Daniel De Moss, MD

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
100%Service-mix similarityView profile →

Peter Desider Vash, MD MPH

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 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)
91%Service-mix similarityView profile →

Peter Cawood Butler, MD

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
85%Service-mix similarityView profile →

Nicolas Musi, MD

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
79%Service-mix similarityView profile →

Shilpa Swamy, MBBS, MD

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
78%Service-mix similarityView profile →

Kathleen Alanna Page, MD

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
71%Service-mix similarityView profile →

John D Carmichael, MD

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 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)
69%Service-mix similarityView profile →

Christine Hema Darwin, MD

Specialty details in registry · Los Angeles, CA

Shared published services
1 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)
68%Service-mix similarityView profile →

Thaer Othman

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 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)
68%Service-mix similarityView profile →

Mark 0 Goodarzi, M.D.

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 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)
67%Service-mix similarityView profile →

Ruchi Mathur, M.D.

Endocrinology (CMS) · Los Angeles, CA

Shared published services
1 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)
64%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.