Quick answers
- Which hospitals does Peter G. Zazzali work at?
- Medicare's official clinician data lists Peter G. Zazzali at 2 hospitals: Clara Maass Medical Center and Nyack Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Peter G. Zazzali see patients?
- Medicare's clinician data lists 2 practice locations, including Belleville, NJ and Passaic, NJ. Call before your visit to confirm the address.
- What is Peter G. Zazzali's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Critical Care (Intensivists), Pulmonary Disease and Sleep Medicine.
- Does Peter G. Zazzali accept Medicare assignment?
- Yes. Medicare's clinician data says Peter G. Zazzali 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 Peter G. Zazzali?
- (973) 450-2000, as listed in official Medicare / NPI Registry data.
- What is Peter G. Zazzali's NPI number?
- 1528136603. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Peter G. Zazzali works
Medicare's Facility Affiliation Data lists Peter G. Zazzali 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
- Nyack HospitalNyack, NY · Acute Care Hospital · CCN 330104
Practice locations
Addresses where Peter G. Zazzali is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Clara Maass DrBelleville, NJ 07109 (973) 450‑2000
- 350 BoulevardPassaic, NJ 07055 (973) 365‑4300
Group practices
Medicare enrollment lists Peter G. Zazzali as a member of these groups (CMS data updated 2026-10-02).
- RWJBH Observation Associates LLC1,008 clinicians in the group
- Inhospital Physicians Corp of New Jersey, PC18 clinicians in the group
Specialties
- Internal Medicineprimary
- Critical Care (Intensivists)also
- Pulmonary Diseasealso
- Sleep Medicinealso
Other internal medicine doctors in Belleville
Clinicians with the same Medicare primary specialty in Belleville, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528136603 |
| 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