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Compare the published Medicare service mix of Lars Ola Harrskog, MD with clinicians in the same registry specialty: Anesthesiology.

PORTLAND, OR · Exact areaEdit location

2024 published service data · 228 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Salameh Sameh Obeidat, MBBS, MHQS

Anesthesiology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
72%Service-mix similarityView profile →

Nicholas K Schiller, M.D.

Anesthesiology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
71%Service-mix similarityView profile →

Natalia Maria Guzman-Seda, MD

Anesthesiology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
62%Service-mix similarityView profile →

Alexei Birger, M.D.

Anesthesiology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Ultrasonic guidance for blood vessel access (76937)
61%Service-mix similarityView profile →

Christopher Varani, M.D.

Anesthesiology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Ultrasonic guidance for blood vessel access (76937)
59%Service-mix similarityView profile →

Austin Peters, M.D.

Anesthesiology · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasonic guidance for blood vessel access (76937)
58%Service-mix similarityView profile →

Warren Spitz, MD

Anesthesiology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Ultrasonic guidance for blood vessel access (76937)
56%Service-mix similarityView profile →

James Sun Demeester, M.D.

Anesthesiology · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Ultrasonic guidance for blood vessel access (76937)
54%Service-mix similarityView profile →

Alexander M Stock, MD

Anesthesiology · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
54%Service-mix similarityView profile →

Stephen Tim Robinson, M.D.

Anesthesiology · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
54%Service-mix similarityView profile →

Anthony Okafor

Anesthesiology · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
54%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.