Are you Dr. John? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 300 Pasteur Dr, Stanford, CA 94305
About Dr. John
Roy M. John, MD is a healthcare provider in Stanford, CA specializing in cardiac electrophysiology. Roy is also listed as specializing in internal medicine, cardiovascular disease, and clinical cardiac electrophysiology. According to Medicare claims data, Roy cared for 995 Medicare patients across 1,123 services. The services billed most often include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only, established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more, and heart rhythm review and interpretation of continous external ekg over 8-15 days. This provider record is associated with NPI 1417993528.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
Conditions Commonly Evaluated or Treated
Within Clinical Cardiac Electrophysiology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Abnormal heart rhythms
Autonomic disorders
Conduction disorders
Dangerous heart rhythms
Device complications
Device issues
Fainting & reflex disorders
Genetic heart conditions
- Arrhythmogenic Right Ventricular Dysplasia
- Brugada Syndrome
- Catecholaminergic Polymorphic Ventricular Tachycardia
- Long QT syndrome
Heart failure and muscle
Heart muscle conditions
Heart rhythm disorders
Inherited rhythm disorders
Structural heart conditions
Symptoms
- Dizziness and Lightheadedness
- Fainting and syncope
- Heart palpitations
- Premature ventricular contractions
- Slow heart rate (bradycardia)
Procedures & services
Most searched procedures
- AFib ablation
- Angioplasty and stenting
- Cardiac catheterization
- Pacemaker implantation
- Watchman procedure
Advanced therapies
Catheter ablation
- AV Node Ablation
- Cardioneuroablation
- Cryoablation
- Epicardial Catheter Ablation
- Heart Flutter Ablation
- Pulsed Field Ablation
- PVC Ablation
- Ventricular Tachycardia Ablation
Device care
Device management
Device placement
Device procedures
- Cardiac resynchronization therapy device placement
- Conduction System Pacing
- Implantable cardioverter-defibrillator placement
- Leadless Pacemaker Placement
- Pacemaker Battery Replacement
- Pacemaker Lead Removal
- Subcutaneous Defibrillator Placement
Diagnostic imaging
Diagnostic monitoring
Diagnostic testing
Diagnostic tests
- 30-Day Cardiac Event Monitor
- Electrophysiology study
- Genetic Arrhythmia Testing
- Heart monitor
- Implantable Loop Recorder (Cardiac Monitor Implant)
- Tilt Table Test
- Wearable Heart Patch Monitor
External devices
Heart rhythm treatments
Medication management
Minor device procedures
Rhythm restoration
Stroke prevention
Procedures Most Often Billed to Medicare
1,123 services · 995 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of pacemaker and upper and lower heart chamber electrode | Procedure | 33208 |
18 | Less often than most peers in Cardiac Electrophysiology |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | Treatment | 93010 |
413 | As often as other peers in Cardiac Electrophysiology |
| Heart rhythm review and interpretation of continous external ekg over 8-15 days | Treatment | 93248 |
72 | More often than most peers in Cardiac Electrophysiology |
| Comprehensive electrophysiologic evaluation with catheter destruction of abnormality causing atrial fibrillation (uncoordinated contraction of upper chambers of heart) by pulmonary vein isolation | Treatment | 93656 |
44 | More often than most peers in Cardiac Electrophysiology |
| Insertion of catheters and destruction of tissue to treat abnormal heart rhythm | Treatment | 93655 |
30 | As often as other peers in Cardiac Electrophysiology |
| Programming of dual lead pacemaker system | Treatment | 93280 |
29 | Less often than most peers in Cardiac Electrophysiology |
| Destruction of tissue of upper heart chamber through tube to treat abnormal heart rhythm | Treatment | 93657 |
23 | Less often than most peers in Cardiac Electrophysiology |
| Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes | Treatment | 99152 |
18 | Less often than most peers in Cardiac Electrophysiology |
| Programming of multiple lead implantable defibrillator system | Treatment | 93284 |
17 | Less often than most peers in Cardiac Electrophysiology |
| Ultrasound evaluation of heart blood vessel with review by radiologist | Treatment | 93662 |
16 | Less often than most peers in Cardiac Electrophysiology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other cardiac electrophysiology specialists in Stanford 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 15 related providers in 2 groups
Class of 1979 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of pacemaker and upper and lower heart chamber electrode 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. John specialize in?
Dr. John is a cardiac electrophysiology in Stanford, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Dr. John located?
Dr. John is listed at 300 Pasteur Dr, Stanford, CA 94305. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. John's phone number?
The number on file is (650) 723-4000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. John's NPI number?
Dr. John's National Provider Identifier is 1417993528. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. John go to medical school?
Dr. John attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. John been practicing?
Dr. John has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What does Dr. John do most often?
According to Medicare billing data, Dr. John performs procedures including insertion of pacemaker and upper and lower heart chamber electrode; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report only and heart rhythm review and interpretation of continous external ekg over 8-15 days, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. John confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. John. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.