Quick answers
- Which hospitals does Seth S. Joseffer work at?
- Medicare's official clinician data lists Seth S. Joseffer at 5 hospitals: Centrastate Medical Center, Hospital of University of Pennsylvania, Hunterdon Medical Center, St Luke's Warren Hospital and University Medical Center of Princeton at Plainsboro. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Seth S. Joseffer see patients?
- Medicare's clinician data lists 3 practice locations, including Newtown, PA, Flemington, NJ and Princeton, NJ. Call before your visit to confirm the address.
- What is Seth S. Joseffer's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Seth S. Joseffer accept Medicare assignment?
- Yes. Medicare's clinician data says Seth S. Joseffer 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 Seth S. Joseffer?
- (215) 741-3141, as listed in official Medicare / NPI Registry data.
- What is Seth S. Joseffer's NPI number?
- 1851445910. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Seth S. Joseffer works
Medicare's Facility Affiliation Data lists Seth S. Joseffer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Centrastate Medical CenterFreehold, NJ · Acute Care Hospital · CCN 310111
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · CCN 390111
- Hunterdon Medical CenterFlemington, NJ · Acute Care Hospital · CCN 310005
- St Luke's Warren HospitalPhillipsburg, NJ · Acute Care Hospital · CCN 310060
- University Medical Center of Princeton at PlainsboroPlainsboro, NJ · Acute Care Hospital · CCN 310010
Practice locations
Addresses where Seth S. Joseffer is enrolled with Medicare (CMS data updated 2026-10-02).
- 104 Pheasant Run, Suite 105Newtown, PA 18940 (215) 741‑3141
- 190 State Route 31, 300bFlemington, NJ 08822 (908) 229‑6627
- 731 Alexander Rd, Suite 200Princeton, NJ 08540 (609) 921‑9001
Group practices
Medicare enrollment lists Seth S. Joseffer as a member of this group (CMS data updated 2026-10-02).
- Princeton Brain and Spine, LLC12 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Newtown
Clinicians with the same Medicare primary specialty in Newtown, PA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851445910 |
| 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