Quick answers
- Which hospitals does Marc Zelkowitz work at?
- Medicare's official clinician data lists Marc Zelkowitz at 5 hospitals: Bergen New Bridge Medical Center, Englewood Hospital and Medical Center, Hackensack Meridian Health Pascack Valley Medical, Hackensack University Medical Center and Holy Name Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc Zelkowitz see patients?
- Medicare's clinician data lists 3 practice locations, including Paramus, NJ, Westwood, NJ and Englewood, NJ. Call before your visit to confirm the address.
- What is Marc Zelkowitz's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Marc Zelkowitz accept Medicare assignment?
- Yes. Medicare's clinician data says Marc Zelkowitz 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.
- Does Marc Zelkowitz offer telehealth?
- Medicare's clinician data says Marc Zelkowitz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marc Zelkowitz?
- (201) 967-4000, as listed in official Medicare / NPI Registry data.
- What is Marc Zelkowitz's NPI number?
- 1609134576. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc Zelkowitz works
Medicare's Facility Affiliation Data lists Marc Zelkowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bergen New Bridge Medical CenterParamus, NJ · Acute Care Hospital · CCN 310058
- Englewood Hospital and Medical CenterEnglewood, NJ · Acute Care Hospital · CCN 310045
- Hackensack Meridian Health Pascack Valley MedicalWestwood, NJ · Acute Care Hospital · CCN 310130
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · CCN 310001
- Holy Name Medical CenterTeaneck, NJ · Acute Care Hospital · CCN 310008
Practice locations
Addresses where Marc Zelkowitz is enrolled with Medicare (CMS data updated 2026-10-02).
- 230 E Ridegewood AveParamus, NJ 07652 (201) 967‑4000
- 250 Old Hook Rd, Suite 303bWestwood, NJ 07675 (201) 567‑5787
- 300 Grand Ave, Suite 101Englewood, NJ 07631 (201) 567‑5787
Group practices
Medicare enrollment lists Marc Zelkowitz as a member of these groups (CMS data updated 2026-10-02).
- Bergen County Improvement Authority94 clinicians in the group
- Bergen Kidney Center PC4 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Paramus
Clinicians with the same Medicare primary specialty in Paramus, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1609134576 |
| 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