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Similar work.
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Compare the published Medicare service mix of John Brandon Winchester, MD with clinicians in the same registry specialty: Anesthesiology.

SAN FRANCISCO, CA · Exact areaEdit location

2024 published service data · 172 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Melvin Tin-Chun La, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on upper abdomen (00790)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure to assess heart electrical activity (00537)
63%Service-mix similarityView profile →

Renae M Tays, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for x-ray or radiation therapy (01922)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
55%Service-mix similarityView profile →

Stephen Yung Kwan Wen, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure to assess heart electrical activity (00537)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
53%Service-mix similarityView profile →

Harmeet Bhullar, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on upper abdomen (00790)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
52%Service-mix similarityView profile →

Nicholas P Lyon

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for procedure for total knee joint replacement (01402)
50%Service-mix similarityView profile →

Johnica Arbel Eyvazzadeh, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for x-ray or radiation therapy (01922)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
49%Service-mix similarityView profile →

Julian David Medina, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for needle placement (76942)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
48%Service-mix similarityView profile →

Brian C Chen, M.D.

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for x-ray or radiation therapy (01922)
  • Anesthesia for procedure to assess heart electrical activity (00537)
47%Service-mix similarityView profile →

Matthew F Giudice, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
46%Service-mix similarityView profile →

Michelle Dinh Nguyen, M.D.

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasonic guidance for needle placement (76942)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
46%Service-mix similarityView profile →

Min Ung Yoon, MD

Anesthesiology · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
46%Service-mix similarityView profile →

Samantha Huei-Ming Chao

Anesthesiology · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
45%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.