Quick answers
- Which hospitals does Steven D. Gronowitz work at?
- Medicare's official clinician data lists Steven D. Gronowitz at 2 hospitals: Clara Maass Medical Center and St Mary's General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Steven D. Gronowitz see patients?
- Medicare's clinician data lists 2 practice locations, including Clifton, NJ and Lyndhurst, NJ. Call before your visit to confirm the address.
- What is Steven D. Gronowitz's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Steven D. Gronowitz accept Medicare assignment?
- Yes. Medicare's clinician data says Steven D. Gronowitz 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 D. Gronowitz offer telehealth?
- Medicare's clinician data says Steven D. Gronowitz offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Steven D. Gronowitz?
- (973) 471-8200, as listed in official Medicare / NPI Registry data.
- What is Steven D. Gronowitz's NPI number?
- 1093772030. 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 D. Gronowitz works
Medicare's Facility Affiliation Data lists Steven D. Gronowitz at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Clara Maass Medical CenterBelleville, NJ · Acute Care Hospital · CCN 310009
- St Mary's General HospitalPassaic, NJ · Acute Care Hospital · CCN 310006
Practice locations
Addresses where Steven D. Gronowitz is enrolled with Medicare (CMS data updated 2026-10-02).
- 1011 Clifton AveClifton, NJ 07013 (973) 471‑8200
- 612 Rugherford AveLyndhurst, NJ 07071 (200) 460‑0063
Group practices
Medicare enrollment lists Steven D. Gronowitz as a member of these groups (CMS data updated 2026-10-02).
- Gastroenterology Associates of New Jersey LLC80 clinicians in the group
- BHMG - United Medical28 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Clifton
Clinicians with the same Medicare primary specialty in Clifton, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1093772030 |
| 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