Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Roy Mattathu John, MD

Individual provider Internal Medicine Physician · NPI 1417993528

Roy Mattathu John, MD is a Cardiac Electrophysiology in Stanford, California. Qualified in 1979, 47 years ago. Practices with Stanford Health Care, a 3,085-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
47
Licensed in
CA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 723-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence C172396 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence C172396 (CA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence C172396 (CA)

Record details

NPI number1417993528
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 20, 2006
Last updated in NPPESApril 22, 2024
Certification dateApril 22, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIAC ELECTROPHYSIOLOGY
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1979 (47 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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