Quick answers
- Which hospitals does Leonard Silverstein work at?
- Medicare's official clinician data lists Leonard Silverstein at 2 hospitals: Hackensack Meridian Health Pascack Valley Medical and Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Leonard Silverstein see patients?
- Medicare's clinician data lists 2 practice locations, including Nutley, NJ and Saddle River, NJ. Call before your visit to confirm the address.
- What is Leonard Silverstein's specialty?
- Medicare lists Allergy/Immunology as the primary specialty.
- Does Leonard Silverstein accept Medicare assignment?
- Yes. Medicare's clinician data says Leonard Silverstein 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 Leonard Silverstein offer telehealth?
- Medicare's clinician data says Leonard Silverstein offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Leonard Silverstein?
- (973) 661-1900, as listed in official Medicare / NPI Registry data.
- What is Leonard Silverstein's NPI number?
- 1639138571. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leonard Silverstein works
Medicare's Facility Affiliation Data lists Leonard Silverstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hackensack Meridian Health Pascack Valley MedicalWestwood, NJ · Acute Care Hospital · CCN 310130
- Valley HospitalParamus, NJ · Acute Care Hospital · CCN 310012
Practice locations
Addresses where Leonard Silverstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 622 Franklin AveNutley, NJ 07110 (973) 661‑1900
- 82 E Allendale Rd, Suite 7Saddle River, NJ 07458 (201) 236‑8282
Group practices
Medicare enrollment lists Leonard Silverstein as a member of this group (CMS data updated 2026-10-02).
- MPV New Jersey MD Services PC151 clinicians in the group
Specialties
- Allergy/Immunologyprimary
Other allergist and immunologists in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Duke University School Of Medicine |
| Graduation year | 1987 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639138571 |
| 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