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Compare the published Medicare service mix of Christopher A Sarkiss, M.D. with clinicians in the same registry specialty: Neurosurgery (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 44 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brian Lee, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
53%Service-mix similarityView profile →

Jasvinder Singh Nangiana, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
53%Service-mix similarityView profile →

Charles Yu Liu, M.D., PHD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
45%Service-mix similarityView profile →

Tyler Scott Cole, MD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
42%Service-mix similarityView profile →

John Yu, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
39%Service-mix similarityView profile →

Darrin J. Lee, MD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarityView profile →

Sean Xie, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
28%Service-mix similarityView profile →

Lindsey Ross

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
27%Service-mix similarityView profile →

Wouter Schievink, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
25%Service-mix similarityView profile →

Won Kim

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
25%Service-mix similarityView profile →

Martin Huy Pham, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
25%Service-mix similarityView profile →

Richard George Everson, MD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
24%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.