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Compare the published Medicare service mix of Leslie Christine Robinson, MD, PHARMD, MBA with clinicians in the same registry specialty: Neurosurgery (CMS).

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 43 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hesham Mostafa Zakaria, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
71%Service-mix similarityView profile →

Nima Alan, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
69%Service-mix similarityView profile →

Tarun Arora, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
68%Service-mix similarityView profile →

Aaron Clark, MD, PHD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
65%Service-mix similarityView profile →

Praveen V. Mummaneni, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
65%Service-mix similarityView profile →

Michael Zhang

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
62%Service-mix similarityView profile →

Christopher P. Ames, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
61%Service-mix similarityView profile →

Timothy Chryssikos, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
61%Service-mix similarityView profile →

Marc Andrew Prablek, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
59%Service-mix similarityView profile →

Lee A Tan, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)
58%Service-mix similarityView profile →

Lewis Zhiyuan Leng, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
53%Service-mix similarityView profile →

Samer Zammar, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Fusion of additional segment of spine (22614)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Placement of stabilizing device to back, 3-6 spine bone segments (22842)
50%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.