John D. Madigan, D.O.
NPI 1427239854ActiveIndividual· Internal Medicine, Nephrology· Millburn, NJ
Internal Medicine, Nephrology (D.O.) with The Nephrology Group PA, practicing in Millburn, New Jersey. Their prescriptions cost Medicare Part D more than their services did: $404,251 for 1,235 claims, against $171,314 paid for services in 2024. Amgen Inc. was the largest of 12 companies reporting payments in 2025, $834.03 in all, mostly food and beverage. Lists Cooperman Barnabas Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1427239854 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Nov 14, 2007 |
| Last updated in NPPES | Mar 1, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 25MBO8268200 | NJ |
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 (NJ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 219 |
|---|---|
| Services billed | 1,328 across 11 procedure codes |
| Paid by Medicare | $171,314 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,235 · 2,305 30-day fills |
|---|---|
| Patients | 170 |
| Total drug cost | $404,251 |
| Generic share | 73% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- The Nephrology Group PAWest Orange, NJ · 6 clinicians
Hospital affiliations
- Cooperman Barnabas Medical CenterLivingston, NJ
- Heights University HospitalJersey City, NJ
- Jersey City Medical CenterJersey City, NJ
- Newark Beth Israel Medical CenterNewark, NJ
- Palisades Medical CenterNorth Bergen, NJ
Other facilities
- Alaris Health Dialysis at Hamilton ParkDialysis facility · Jersey City, NJ
- Davita Jersey City DialysisDialysis facility · North Bergen, NJ
- Davita Jersey City SummitDialysis facility · Jersey City, NJ
- Davita Lyndhurst DialysisDialysis facility · Lyndhurst, NJ
- Fmc Jersey CityDialysis facility · Jersey City, NJ
Industry payments (Open Payments)
- 2025$834.03 · 27 payments from 12 companies
- 2024$785.16 · 24 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $124.18 | 3 |
| Abbvie Inc. | $122.83 | 1 |
| Aurinia Pharma U.S., Inc. | $113.11 | 5 |
| La Jolla Pharmaceutical Company | $97.05 | 1 |
| Nxstage Medical, Inc. | $91.05 | 1 |
What the 2025 payments were for
- Food and Beverage$832.37 · 26 payments
- Education$1.66 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Nephrology providers in Millburn
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