Quick answers
- Which hospitals does Stuart R. Geffner work at?
- Medicare's official clinician data lists Stuart R. Geffner at 1 hospital: Cooperman Barnabas Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stuart R. Geffner see patients?
- Medicare's clinician data lists 1 practice location in Livingston, NJ. Call before your visit to confirm the address.
- What is Stuart R. Geffner's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Stuart R. Geffner accept Medicare assignment?
- Yes. Medicare's clinician data says Stuart R. Geffner 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 Stuart R. Geffner's NPI number?
- 1649213422. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stuart R. Geffner works
Medicare's Facility Affiliation Data lists Stuart R. Geffner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cooperman Barnabas Medical CenterLivingston, NJ · Acute Care Hospital · CCN 310076
Practice locations
Addresses where Stuart R. Geffner is enrolled with Medicare (CMS data updated 2026-10-02).
- 94 Old Short Hills RdLivingston, NJ 07039
Group practices
Medicare enrollment lists Stuart R. Geffner as a member of this group (CMS data updated 2026-10-02).
- Barnabas Health Medical Group PC1,070 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Livingston
Clinicians with the same Medicare primary specialty in Livingston, NJ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649213422 |
| 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