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Similar work.
More providers to explore.

Compare the published Medicare service mix of Mark Seth Christofferson, MD with clinicians in the same registry specialty: Anesthesiology.

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 320 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Benjamin Ryan Beal, M.D

Anesthesiology · San Diego, 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 other procedure on upper abdomen (00790)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
80%Service-mix similarityView profile →

Elmar Malek, MD

Anesthesiology · San Diego, 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 other procedure on upper abdomen (00790)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
80%Service-mix similarityView profile →

Michael Nghia Nguyen, M.D.

Anesthesiology · San Diego, 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 other procedure on upper abdomen (00790)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
79%Service-mix similarityView profile →

Adam Brent Barrus, M.D.

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
76%Service-mix similarityView profile →

Puya Hosseini, M.D.

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
67%Service-mix similarityView profile →

Daniel Vasco Lazzareschi, MD

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
66%Service-mix similarityView profile →

Miguel Angel Blacutt, MD

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
66%Service-mix similarityView profile →

Ruth S. Waterman, MD

Anesthesiology · San Diego, 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 other procedure on upper abdomen (00790)
  • Anesthesia for total hip replacement (01214)
64%Service-mix similarityView profile →

Taraz Nicholas Nosrat, MD

Anesthesiology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on upper abdomen (00790)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
62%Service-mix similarityView profile →

Robert A. Nye, M.D.

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
62%Service-mix similarityView profile →

Joseph Welsh, DO

Anesthesiology · San Diego, 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 total hip replacement (01214)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
60%Service-mix similarityView profile →

Hisham Nabil El-Tayeb, M.D.

Anesthesiology · San Diego, 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
59%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.