Roy John, MD
NPI 1417993528 · Clinical Cardiac Electrophysiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Cardiac Electrophysiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roy John, MD is a Clinical Cardiac Electrophysiology Physician provider in Stanford, CA (NPI 1417993528).
Provider details
- NPI number
- 1417993528
- Entity type
- Individual
- Primary specialty
- Clinical Cardiac Electrophysiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C172396 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,123 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 413 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 91 | $164 |
| Heart Rhythm Review and Interpretation of Continous External Ekg Over 8-15 Days93248 | 72 | $29 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 57 | $214 |
| Comprehensive Electrophysiologic Evaluation With Catheter Destruction of Abnormality Causing Atrial Fibrillation (uncoordinated Contraction of Upper Chambers of Heart) By Pulmonary Vein Isolation93656 | 44 | $988 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 188 | 55 |
| Metoprolol Succinate | 121 | 42 |
| Metoprolol Tartrate | 60 | 17 |
| Flecainide Acetate | 57 | 24 |
| Rivaroxabanbrand: Xarelto | 49 | — |
| Amiodarone Hcl | 43 | 21 |
| Diltiazem Hclbrand: Diltiazem 24hr Er (cd) |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,576 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-20
- Last updated
- 2024-04-22
- Certified
- 2024-04-22
Frequently asked questions
- What is Roy John's NPI number?
- Roy John's National Provider Identifier (NPI) is 1417993528, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roy John's specialty?
- Roy John is listed in the NPPES registry with a primary specialty of Clinical Cardiac Electrophysiology Physician (Allopathic & Osteopathic Physicians).
- Where is Roy John located?
- Roy John's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Roy John's phone number?
- The practice phone number listed in the NPPES registry for Roy John is (650) 723-4000.
- Does Roy John accept Medicare?
- Roy John is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roy John's NPI active?
- Yes — Roy John's NPI (1417993528) is active in the NPPES registry as of the last update on 2024-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.