Quick answers
- Which hospitals does Gerard Pregenzer Sr. work at?
- Medicare's official clinician data lists Gerard Pregenzer Sr. at 4 hospitals: JFK University Medical Center, Morristown Medical Center, Overlook Medical Center and Robert Wood Johnson University Hospital - Somerset…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gerard Pregenzer Sr. see patients?
- Medicare's clinician data lists 1 practice location in Warren, NJ. Call before your visit to confirm the address.
- What is Gerard Pregenzer Sr.'s specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Gerard Pregenzer Sr. accept Medicare assignment?
- Yes. Medicare's clinician data says Gerard Pregenzer Sr. 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 Gerard Pregenzer Sr.?
- (732) 469-9400, as listed in official Medicare / NPI Registry data.
- What is Gerard Pregenzer Sr.'s NPI number?
- 1588671648. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gerard Pregenzer Sr. works
Medicare's Facility Affiliation Data lists Gerard Pregenzer Sr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- JFK University Medical CenterEdison, NJ · Acute Care Hospital · CCN 310108
- Morristown Medical CenterMorristown, NJ · Acute Care Hospital · CCN 310015
- Overlook Medical CenterSummit, NJ · Acute Care Hospital · CCN 310051
- Robert Wood Johnson University Hospital - Somerset…Somerville, NJ · Acute Care Hospital · CCN 310048
Practice locations
Addresses where Gerard Pregenzer Sr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 65 Mountain Blvd Ext, Suite 201Warren, NJ 07059 (732) 469‑9400
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in New Jersey
Clinicians with the same Medicare primary specialty in New Jersey — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588671648 |
| 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