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Compare the published Medicare service mix of Zachary Barnard with clinicians in the same registry specialty: Neurosurgery (CMS).

BEVERLY HILLS, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

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

Sean S. Armin, M.D.

Neurosurgery (CMS) · Valley Village, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
72%Service-mix similarity~6.5 milesView profile →

Andrew K Wong, M.D.

Neurosurgery (CMS) · Santa Monica, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
61%Service-mix similarity~5.4 milesView profile →

Sean Xie, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
51%Service-mix similarity~7.5 milesView profile →

Kurtis Birch

Neurosurgery (CMS) · West Hollywood, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
33%Service-mix similarity~1.5 milesView profile →

Jerry Noel, D.O.

Neurosurgery (CMS) · Santa Monica, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
33%Service-mix similarity~6.5 milesView profile →

Daniel Nagasawa, MD

Neurosurgery (CMS) · Santa Monica, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
32%Service-mix similarity~6.2 milesView profile →

Sun H Lee, MD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
31%Service-mix similarity~6.4 milesView profile →

Daniel Chia-Hsing Lu, M.D.

Neurosurgery (CMS) · Santa Monica, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
26%Service-mix similarity~6.5 milesView profile →

Lindsey Ross

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
26%Service-mix similarity~1.5 milesView profile →

Nouzhan Sehati, MD

Neurosurgery (CMS) · Burbank, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
23%Service-mix similarity~7.3 milesView profile →

Tyler Scott Cole, MD

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
20%Service-mix similarity~1.5 milesView profile →

Sasan Yadegar, M.D

Neurosurgery (CMS) · Inglewood, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
18%Service-mix similarity~8.5 milesView 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 approximate distance 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.