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Compare the published Medicare service mix of Richard Alan Ott, M.D. with clinicians in the same registry specialty: Cardiac Surgery · Thoracic Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 307 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Joseph David Cohn, MD

Specialty details in registry · Santa Rosa, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

Frank Norman Slachman, M.D.

Thoracic Surgery (CMS) · Sacramento, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

G. James Avery

Specialty details in registry · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

Rajaratnam Skantharaja, MD

Thoracic Surgery (CMS) · Modesto, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

James Cernilia, M.D.

Cardiovascular Disease (Cardiology) · Thoracic Surgery (CMS) · Newport Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

Kelsey Gray, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Torrance, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

Irsa Shoiab Hasan, MD

Cardiac Surgery (CMS) · Thousand Oaks, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
100%Service-mix similarityView profile →

Simon Maltais, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Thousand Oaks, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
76%Service-mix similarityView profile →

Charles Orlando Murphy, MD

General Surgery · Thoracic Surgery (CMS) · Fountain Valley, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
76%Service-mix similarityView profile →

Guy Gerard Lemire, M.D.

Specialty details in registry · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
75%Service-mix similarityView profile →

Patrick T. Paw, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Bakersfield, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
73%Service-mix similarityView profile →

Andrea Virginia Corpora, PA-C

Physician Assistant (CMS) · Rancho Mirage, CA

Shared published services
1 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
72%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.