John Renzi, MD
NPI 1679140966 · Family Medicine Physician · South Bend, IN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Renzi, MD is a Family Medicine Physician provider in South Bend, IN (NPI 1679140966).
Provider details
- NPI number
- 1679140966
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 01093006A (IN)
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 tenure28% of score
5 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
174 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 91 | $73 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 40 | $110 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 16 | $160 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 15 | $106 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 12 | $75 |
Typical Medicare-allowed amounts for these services range $73–$160 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Metoprolol Succinate | 40 |
| Atorvastatin Calcium | 27 |
| Buspirone Hcl | 23 |
| Gabapentin | 22 |
| Duloxetine Hcl | 19 |
| Lisinopril | 18 |
| Hydrochlorothiazide | 18 |
| Amitriptyline Hcl | 16 |
| Losartan Potassium | 15 |
Practice location
Mailing address
Additional practice locations (1)
- 600 East Blvd 4th Floor Hospitalists SteElkhart, IN 46514-2483Phone: (574) 389-7393Fax: (574) 647-1094
Registry dates
- Enumerated
- 2021-06-07
- Last updated
- 2026-03-30
- Certified
- 2026-03-30
Frequently asked questions
- What is John Renzi's NPI number?
- John Renzi's National Provider Identifier (NPI) is 1679140966, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Renzi's specialty?
- John Renzi is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Renzi located?
- John Renzi's practice location on file with NPPES is 615 N Michigan St 1st Fl Hospitalist Ste, South Bend, IN 46601-1033.
- What is John Renzi's phone number?
- The practice phone number listed in the NPPES registry for John Renzi is (574) 647-3050.
- Does John Renzi accept Medicare?
- John Renzi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Renzi's NPI active?
- Yes — John Renzi's NPI (1679140966) is active in the NPPES registry as of the last update on 2026-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.