John C. Maynard, MD
NPI 1730180878ActiveIndividual· Internal Medicine, Nephrology· Rockford, IL
Internal Medicine, Nephrology (MD) in Rockford, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1978). 581 Medicare patients in 2024, $165,644 paid; nearly all of their 1,004 Part D prescriptions were generic (96%).
Overview
| NPI | 1730180878 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 10, 2005 |
| Last updated in NPPES | Apr 22, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 036066422 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 581 |
|---|---|
| Services billed | 2,587 across 35 procedure codes |
| Paid by Medicare | $165,644 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,004 · 2,671 30-day fills |
|---|---|
| Patients | 232 |
| Total drug cost | $53,127 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Nephrology |
Medical group
- Rna of Rockford, PLLCBeloit, WI · 18 clinicians
Hospital affiliations
- Cgh Medical CenterSterling, IL
- Osf Saint Katharine Medical CenterDixon, IL
- Saint Anthony Medical CenterRockford, IL
- Uw HealthRockford, IL
Other facilities
- Davita Churchview DialysisDialysis facility · Rockford, IL
- Davita Driftwood DialysisDialysis facility · Freeport, IL
- Davita Owen Center Home TrainingDialysis facility · Rockford, IL
- Davita Roxbury Dialysis CenterDialysis facility · Rockford, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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