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Compare the published Medicare service mix of John Christopher Evans, MD with clinicians in the same registry specialty: Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (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
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
48%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
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
47%Service-mix similarityView profile →

Sanjiv Narayan, MD

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

Shared published services
2 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)
46%Service-mix similarityView profile →

Tina Baykaner, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
46%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
  • 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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
42%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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
38%Service-mix similarityView profile →

Alexander Carroll Perino, MD

Cardiovascular Disease (Cardiology) · Internal Medicine (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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
37%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)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
37%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
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system (93288)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
26%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
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system (93288)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
25%Service-mix similarityView profile →

Girish Ananth Narayan, MD

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

Shared published services
2 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)
19%Service-mix similarityView profile →

Paul Johnson Wang, MD

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

Shared published services
2 shared services · view billing descriptions
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
10%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.