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Compare the published Medicare service mix of Ognjen Katan, M.D. with clinicians in the same registry specialty: Anesthesiology.

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Albert Phan Nguyen, MD

Anesthesiology · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Critical care, each additional 30 minutes (99292)
95%Service-mix similarityView profile →

Balbino Eduardo Lopez, MD

Anesthesiology · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
82%Service-mix similarityView profile →

John H Turnbull, MD

Anesthesiology · San Francisco, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Emergent insertion of breathing tube into windpipe using an endoscope (31500)
72%Service-mix similarityView profile →

Ronald Gary Pearl, MD, PHD

Anesthesiology · Stanford, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
65%Service-mix similarityView profile →

Ahmed Medhat Darwish, MD

Anesthesiology · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
65%Service-mix similarityView profile →

Haviva Garrett, MD

Anesthesiology · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
65%Service-mix similarityView profile →

Kaveh Hemati

Anesthesiology · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
65%Service-mix similarityView profile →

Michael W. Wolfe, MD

Anesthesiology · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
58%Service-mix similarityView profile →

Melissa Ann Vogelsong, MD

Anesthesiology · Stanford, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Critical care, each additional 30 minutes (99292)
54%Service-mix similarityView profile →

Jane Sueyon Moon, M.D.

Anesthesiology · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
54%Service-mix similarityView profile →

Anahat K Dhillon, M.D.

Anesthesiology · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
51%Service-mix similarityView profile →

David Warren Boldt, M.D.

Anesthesiology · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
49%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.