Quick answers
- Which hospitals does John Madigan work at?
- Medicare's official clinician data lists John Madigan at 5 hospitals: Cooperman Barnabas Medical Center, Heights University Hospital, Jersey City Medical Center, Newark Beth Israel Medical Center and Palisades Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Madigan see patients?
- Medicare's clinician data lists 2 practice locations, including West Orange, NJ and Jersey City, NJ. Call before your visit to confirm the address.
- What is John Madigan's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does John Madigan accept Medicare assignment?
- Yes. Medicare's clinician data says John Madigan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John Madigan?
- (973) 325-2103, as listed in official Medicare / NPI Registry data.
- What is John Madigan's NPI number?
- 1427239854. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Madigan works
Medicare's Facility Affiliation Data lists John Madigan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · CCN 310076
- Heights University HospitalJersey City, NJ · Acute Care Hospital · closed, according to its website · CCN 310016
- Jersey City Medical CenterJersey City, NJ · Acute Care Hospital · CCN 310074
- Newark Beth Israel Medical CenterNewark, NJ · Acute Care Hospital · CCN 310002
- Palisades Medical CenterNorth Bergen, NJ · Acute Care Hospital · CCN 310003
Practice locations
Addresses where John Madigan is enrolled with Medicare (CMS data updated 2026-10-02).
- 111 Northfield Ave, Suite 311West Orange, NJ 07052 (973) 325‑2103
- 142 Palisade Ave, Suite 210Jersey City, NJ 07306 (201) 963‑1077
Group practices
Medicare enrollment lists John Madigan as a member of this group (CMS data updated 2026-10-02).
- The Nephrology Group PA6 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in West Orange
Clinicians with the same Medicare primary specialty in West Orange, NJ — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427239854 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians