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Compare the published Medicare service mix of Alexander Carroll Perino, MD with clinicians in the same registry specialty: Cardiovascular Disease (Cardiology) · Internal Medicine (CMS).

STANFORD, CA · Exact areaEdit location

2024 published service data · 12 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mohan Nallicheri Viswanathan, M.D.

Cardiac Electrophysiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
78%Service-mix similarityView profile →

Nitish Badhwar, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
78%Service-mix similarityView profile →

Tina Baykaner, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
77%Service-mix similarityView profile →

Albert Joseph Rogers, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
76%Service-mix similarityView profile →

Roy Mattathu John, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
  • Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation (93656)
76%Service-mix similarityView profile →

Paul Johnson Wang, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
62%Service-mix similarityView profile →

Rajan Lalit Shah, M.D.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
62%Service-mix similarityView profile →

Sung Hwan Chun, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
61%Service-mix similarityView profile →

Girish Ananth Narayan, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
61%Service-mix similarityView profile →

Marco Valentin Perez, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Evaluation of single, dual, multiple lead or leadless pacemaker system, remote up to 90 days (93294)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, or multiple lead implantable defibrillator system, remote up to 90 days (93295)
56%Service-mix similarityView profile →

Sanjiv Narayan, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
49%Service-mix similarityView profile →

John Christopher Evans, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
37%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.