Quick answers
- Which hospitals does Steven R. Leibowitz work at?
- Medicare's official clinician data lists Steven R. Leibowitz at 2 hospitals: Hackensack University Medical Center and Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven R. Leibowitz see patients?
- Medicare's clinician data lists 3 practice locations, including River Edge, NJ, Toms River, NJ and Hackensack, NJ. Call before your visit to confirm the address.
- What is Steven R. Leibowitz's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Steven R. Leibowitz accept Medicare assignment?
- Yes. Medicare's clinician data says Steven R. Leibowitz 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 Steven R. Leibowitz offer telehealth?
- Medicare's clinician data says Steven R. Leibowitz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Steven R. Leibowitz?
- (201) 489-7772, as listed in official Medicare / NPI Registry data.
- What is Steven R. Leibowitz's NPI number?
- 1053323600. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Steven R. Leibowitz works
Medicare's Facility Affiliation Data lists Steven R. Leibowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hackensack University Medical CenterHackensack, NJ · Acute Care Hospital · CCN 310001
- Valley HospitalParamus, NJ · Acute Care Hospital · CCN 310012
Practice locations
Addresses where Steven R. Leibowitz is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 Kinderkamack Rd, Suite 301River Edge, NJ 07661 (201) 489‑7772
- 301 Lakehurst RdToms River, NJ 08755 (732) 281‑1590
- 52 1st StHackensack, NJ 07601 (201) 488‑3003
Group practices
Medicare enrollment lists Steven R. Leibowitz as a member of this group (CMS data updated 2026-10-02).
- Gastroenterology Associates of New Jersey LLC80 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in River Edge
Clinicians with the same Medicare primary specialty in River Edge, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053323600 |
| 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