Quick answers
- Which hospitals does Oliver S. Youssef work at?
- Medicare's official clinician data lists Oliver S. Youssef at 2 hospitals: Clara Maass Medical Center and Hackensack Meridian Mountainside Medical. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Oliver S. Youssef see patients?
- Medicare's clinician data lists 1 practice location in Nutley, NJ. Call before your visit to confirm the address.
- What is Oliver S. Youssef's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Oliver S. Youssef accept Medicare assignment?
- Yes. Medicare's clinician data says Oliver S. Youssef 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 Oliver S. Youssef?
- (973) 773-9250, as listed in official Medicare / NPI Registry data.
- What is Oliver S. Youssef's NPI number?
- 1801826219. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Oliver S. Youssef works
Medicare's Facility Affiliation Data lists Oliver S. Youssef 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
- Hackensack Meridian Mountainside MedicalMontclair, NJ · Acute Care Hospital · CCN 310054
Practice locations
Addresses where Oliver S. Youssef is enrolled with Medicare (CMS data updated 2026-10-02).
- 115 Franklin AveNutley, NJ 07110 (973) 773‑9250
Group practices
Medicare enrollment lists Oliver S. Youssef as a member of this group (CMS data updated 2026-10-02).
- Ear, Nose and Throat Center of NJ2 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers R W Johnson Medical School (cam/new Bruns/pisc) |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801826219 |
| 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