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Compare the published Medicare service mix of Shanika Dayanthi Perera, M.D. with clinicians in the same registry specialty: Anesthesiology.

PASADENA, CA · Exact areaEdit location

2024 published service data · 33 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Nicholas Namwon Back, M.D.

Anesthesiology · Pasadena, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
54%Service-mix similarityView profile →

Emil Saify, M.D.

Anesthesiology · Pasadena, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
53%Service-mix similarityView profile →

Joel Len Hutchinson, M.D.

Anesthesiology · Pasadena, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
53%Service-mix similarityView profile →

Aakash V. Agarwala, MD

Anesthesiology · Pasadena, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
  • Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance (01938)
51%Service-mix similarityView profile →

Jonathan Jacob Phillips, M.D.

Anesthesiology · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
50%Service-mix similarityView profile →

Kjell Nicholas Hult, M.D.

Anesthesiology · Pasadena, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
  • Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance (01938)
45%Service-mix similarityView profile →

Joseph Jin

Anesthesiology · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
45%Service-mix similarityView profile →

Jeffrey Michael Ching, M.D.

Anesthesiology · Pasadena, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for injection, drainage or aspiration procedures on spine or spinal cord of lower back accessed through skin using imaging guidance (01938)
42%Service-mix similarityView profile →

Amy Lynn Kim, MD

Anesthesiology · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
35%Service-mix similarityView profile →

Rickey Alan Rubin, M.D.

Anesthesiology · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
30%Service-mix similarityView profile →

William Vincent Harrity, M.D.

Anesthesiology · Pasadena, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for lens surgery (00142)
29%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.