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

Ronald Mastouri, MD

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1134389968

Ronald Mastouri, MD is an Internal Medicine in Indianapolis, Indiana. Qualified in 1999, 27 years ago. Practices with Johnson Memorial Hospital, a 39-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Indiana.

Years since qualifying
27
Licensed in
IN
In the registry since
2008
Specialties on file
2
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

Student / training record This NPI belongs to someone enrolled in a health care training programme. It carries no licence and no practice of its own, so no address or phone number is published for it.

Indianapolis, IN

Additional practice locations (1)

  • 1701 N Senate Blvd, Indianapolis, IN 46202-1239 — (888) 484-3258

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 01067326A (IN)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X · Licence 11012317A (IN)

Record details

NPI number1134389968
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2008
Last updated in NPPESMarch 14, 2025
Certification dateMarch 14, 2025

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Johnson Memorial Hospital — 39 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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