Quick answers
- Which hospitals does Gregory C. Zwack work at?
- Medicare's official clinician data lists Gregory C. Zwack at 1 hospital: Novant Health New Hanover Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory C. Zwack see patients?
- Medicare's clinician data lists 9 practice locations, including Jacksonville, NC and Wilmington, NC. Call before your visit to confirm the address.
- What is Gregory C. Zwack's specialty?
- Medicare lists Otolaryngology as the primary specialty.
- Does Gregory C. Zwack accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory C. Zwack 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 Gregory C. Zwack?
- (910) 341-1540, as listed in official Medicare / NPI Registry data.
- What is Gregory C. Zwack's NPI number?
- 1104857358. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory C. Zwack works
Medicare's Facility Affiliation Data lists Gregory C. Zwack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Novant Health New Hanover Regional Medical CenterWilmington, NC · Acute Care Hospital · CCN 340141
Practice locations
Addresses where Gregory C. Zwack is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 1000 Brabham LnJacksonville, NC 28546 (910) 341‑1540
- 1202 Medical Ctr DrWilmington, NC 28401 (910) 341‑1540
- 1222 Medical Ctr DrWilmington, NC 28401 (910) 341‑1540
- 6781 Parker Farm Dr, Suite 200Wilmington, NC 28405 (910) 341‑1540
- 8064 Market StWilmington, NC 28411 (910) 341‑1540
Group practices
Medicare enrollment lists Gregory C. Zwack as a member of this group (CMS data updated 2026-10-02).
- Wilmington Health PLLC369 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in North Carolina
Clinicians with the same Medicare primary specialty in North Carolina — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Jefferson Medical College Of Thomas Jefferson University |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104857358 |
| 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