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Compare the published Medicare service mix of Daniel Cortez, MD, PHD with clinicians in the same registry specialty: Cardiac Electrophysiology · Undefined Physician Type (Specify) (CMS).

CA · Exact areaEdit location

2024 published service data · 10 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Thomas Fagan, MD

Pediatric Medicine (CMS) · Madera, CA

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
75%Service-mix similarityView profile →

Scott Randolph Ceresnak, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Pediatric Medicine (CMS) · Palo Alto, CA

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
75%Service-mix similarityView profile →

Ronn E Tanel, M.D.

Pediatric Medicine (CMS) · San Francisco, CA

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
75%Service-mix similarityView profile →

Saar Danon, M.D.

Interventional Cardiology · Pediatric Medicine (CMS) · Long Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
39%Service-mix similarityView profile →

Kevin Micheal Shannon, M.D.

Pediatric Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
25%Service-mix similarityView profile →

Leigh Christopher Reardon, MD

Cardiovascular Disease (Cardiology) · Internal Medicine · Pediatric Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
18%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.