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Compare the published Medicare service mix of Luis Emilio Savastano, M.D. 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.

Ethan Andrew Winkler, M.D., PH.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of blood vessel (75898)
  • Occlusion of central nervous system or spinal cord artery (61624)
  • Review by radiologist of image for insertion of material to block blood flow (75894)
68%Service-mix similarityView profile →

Daniel Raper, MBBS

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)
  • Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)
  • Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist (36223)
48%Service-mix similarityView profile →

Lorenzo Rinaldo, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of blood vessel (75898)
  • Occlusion of central nervous system or spinal cord artery (61624)
  • Review by radiologist of image for insertion of material to block blood flow (75894)
48%Service-mix similarityView profile →

Isaac Yang, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
33%Service-mix similarityView profile →

Gregory August Kuzmik, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
30%Service-mix similarityView profile →

Michael Zhang

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
22%Service-mix similarityView profile →

Marc Andrew Prablek, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
21%Service-mix similarityView profile →

Lewis Zhiyuan Leng, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
17%Service-mix similarityView profile →

Jang Won Yoon, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
1 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)
17%Service-mix similarityView profile →

Aaron Clark, MD, PHD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
16%Service-mix similarityView profile →

Edward Chang, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
15%Service-mix similarityView profile →

Hesham Mostafa Zakaria, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
15%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.