Ronald Mastouri, MD
NPI 1134389968 · Cardiovascular Disease Physician · Indianapolis, IN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Mastouri, MD is a Cardiovascular Disease Physician provider in Indianapolis, IN (NPI 1134389968).
Provider details
- NPI number
- 1134389968
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 11012317A (IN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,035 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 | 835 | $8 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 510 | $64 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Review By Physician93018 | 91 | $13 |
| Exercise Or Drug-Induced Heart Stress Test With Electrocardiogram (ecg) With Supervision By Physician93016 | 70 | $19 |
| Nuclear Medicine Studies of Heart Muscle at Rest and With Stress and Spect78452 | 57 | $69 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Carvedilol | 151 | 45 |
| Metoprolol Succinate | 129 | 40 |
| Atorvastatin Calcium | 124 | 41 |
| Amlodipine Besylate | 116 | 33 |
| Ezetimibe | 103 | 31 |
| Rosuvastatin Calcium | 96 | 30 |
| Lisinopril | 88 | 27 |
Practice location
Mailing address
Additional practice locations (1)
- 1701 N Senate BlvdIndianapolis, IN 46202-1239Phone: (888) 484-3258
Registry dates
- Enumerated
- 2008-06-16
- Last updated
- 2025-03-14
- Certified
- 2025-03-14
Frequently asked questions
- What is Ronald Mastouri's NPI number?
- Ronald Mastouri's National Provider Identifier (NPI) is 1134389968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Mastouri's specialty?
- Ronald Mastouri is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Mastouri located?
- Ronald Mastouri's practice location on file with NPPES is 1801 N Senate Ave, Indianapolis, IN 46202.
- What is Ronald Mastouri's phone number?
- The practice phone number listed in the NPPES registry for Ronald Mastouri is (317) 962-0095.
- Does Ronald Mastouri accept Medicare?
- Ronald Mastouri is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Mastouri's NPI active?
- Yes — Ronald Mastouri's NPI (1134389968) is active in the NPPES registry as of the last update on 2025-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.