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Compare the published Medicare service mix of Daniel Raper, MBBS 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
  • Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist (36223)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
53%Service-mix similarityView profile →

Luis Emilio Savastano, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist (36223)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
  • Insertion of tube into external neck artery for diagnosis or treatment with review by radiologist (36227)
48%Service-mix similarityView profile →

Geoffrey Todd Manley, MD PHD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
40%Service-mix similarityView profile →

Michael Cen Huang, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
37%Service-mix similarityView profile →

Phiroz Erach Tarapore, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
36%Service-mix similarityView profile →

Tarun Arora, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
32%Service-mix similarityView profile →

Ernest Joseph Barthelemy

Neurosurgery (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
31%Service-mix similarityView profile →

Lewis Zhiyuan Leng, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
31%Service-mix similarityView profile →

Maya Srikanth Graham, M.D., PH.D.

Neurosurgery · Surgical Oncology (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
29%Service-mix similarityView profile →

Lorenzo Rinaldo, MD

Neurosurgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Insertion of tube into intracranial artery for diagnosis or treatment with review by radiologist (36223)
  • Insertion of tube into brain artery for diagnosis or treatment with review by radiologist (36226)
  • Insertion of tube into internal neck artery for diagnosis or treatment with review by radiologist (36224)
26%Service-mix similarityView profile →

Michael Zhang

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
22%Service-mix similarityView profile →

Brian Thomas Andrews, M.D.

Neurosurgery (CMS) · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
16%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.