Dr. Gregory C. Zwack
- Gender: Male
- Experience: 29 years
- Graduated from: Jefferson Medical College Of Thomas Jefferson University
- Graduation year: 1992
- Sole propriator: Yes
- NPI: 1104857358
Dr. Gregory C. Zwack MD
Otolaryngologist
He is located at 6727 Parker Farm Drive in Wilmington, NC 28405. Can help patients with the following: Deafness, Dizziness, Ear Wax, Inner Ear Disorders, Laryngitis, Swimmer's Ear. His National Provider Identifier (NPI) number is 1104857358. Appointment can be made via the phone number (910) 341-3300. He is affiliated with 2 practices and 1 hospitals.
Conditions treated
Dr. Gregory Charles Zwack, being an otolaryngologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Gregory C. Zwack.
- Allergic Reaction
- Assistive Listening Devices
- Auditory Processing Disorder
- Aural Rehabilitation
- Bad Breath
- Cancer
- Cauliflower Ear
- Chronic Cough
- Chronic Rhinitis
- Cleft Palate and Cleft Lip
- Deafness
- Deviated Septum
- Dizziness
- Ear Infection
- Ear Wax
- Eustachian Tube Problems
- Eye Allergy
- Hay Fever
- Headache
- Hearing Conservation
- Impacted Earwax
- Inner Ear Disorders
- Laryngitis
- Middle Ear Infection
- Nasal Polyps
- Newborn or Infant Hearing Screening
- Noise Sensitivity
- Noise-Induced Hearing Loss (NIHL)
- Nosebleed
- Oral Cancer
- Otoacoustic Emission Test (OAE)
- Peripheral Nerve Tumors
- Sinus Tract
- Sinusitis
- Sleep Apnea
- Sleep Disorders
- Sore Throat
- Swallowing Disorders
- Swimmer's Ear
- Taste Disorders
- Tinnitus
- Tongue Problems
- Usher Syndrome
- Vertigo
- Vestibular Testing
Procedures Performed by Dr. Gregory C. Zwack
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Gregory C. Zwack as in-network for the following 2026 plans.
Health plans
Ambetter of North Carolina
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 29 plans from Ambetter of North Carolina
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Clear Silver with $0 Insulin Options | HMO · Silver | Preferred | Accepting new patients |
| Complete Gold | HMO · Gold | Preferred | Accepting new patients |
| Complete Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Complete Gold with Atrium Health | HMO · Gold | Preferred | Accepting new patients |
| Complete Gold with Atrium Health + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Elite Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Elite Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Elite Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Elite Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Enhanced Asthma/COPD Care Silver with $0 Drug Options | HMO · Silver | Preferred | Accepting new patients |
| Enhanced Asthma/COPD Care Silver with $0 Drug Options + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
| Everyday Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Everyday Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Focused Silver with Atrium Health | HMO · Silver | Preferred | Accepting new patients |
| Focused Silver with Atrium Health + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
| Standard Expanded Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Expanded Bronze + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Expanded Bronze with Atrium Health | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Expanded Bronze with Atrium Health + Vision + Adult Dental | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Standard Gold | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold with Atrium Health | HMO · Gold | Preferred | Accepting new patients |
| Standard Gold with Atrium Health + Vision + Adult Dental | HMO · Gold | Preferred | Accepting new patients |
| Standard Silver | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver with Atrium Health | HMO · Silver | Preferred | Accepting new patients |
| Standard Silver with Atrium Health + Vision + Adult Dental | HMO · Silver | Preferred | Accepting new patients |
Cigna Healthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 17 plans from Cigna Healthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Connect Bronze 5500 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze 6500 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD 5000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD 6000 Indiv Med Deductible | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Bronze RD CMS Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect Gold 1500 Indiv Med Deductible | HMO · Gold | Preferred | Accepting new patients |
| Connect Gold CMS Standard | HMO · Gold | Preferred | Accepting new patients |
| Connect Gold RD CMS Standard | HMO · Gold | Preferred | Accepting new patients |
| Connect myDiabetesCare Bronze | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Connect myDiabetesCare Silver | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver 3600 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver CMS Standard | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD 3500 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD 5000 Indiv Med Deductible | HMO · Silver | Preferred | Accepting new patients |
| Connect Silver RD CMS Standard | HMO · Silver | Preferred | Accepting new patients |
UnitedHealthcare
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 13 plans from UnitedHealthcare
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Essential ($0 Virtual Urgent Care, No Referrals | HMO · Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard (No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Bronze Standard+ Dental + Vision (No Referrals) | HMO · Expanded Bronze | Non Preferred | Accepting new patients |
| UHC Gold Advantage ($0 Virtual Urgent Care, $1 Tier 2 Rx, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Advantage + ($0 Virtual Urgent Care, $1 Tier 2 Rx, Dental + Vision, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care, No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Gold Standard (No Referrals) | HMO · Gold | Non Preferred | Accepting new patients |
| UHC Silver Advantage ($0 Virtual Urgent Care, $3 Tier 2 Rx, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Advantage + ($0 Virtual Urgent Care, $3 Tier 2 Rx, Dental + Vision, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Standard (No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value ($0 Virtual Urgent Care, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
| UHC Silver Value + ($0 Virtual Urgent Care, Dental + Vision, No Referrals) | HMO · Silver | Non Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Gregory C. Zwack is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Gregory C. Zwack is enrolled to bill Medicare as a Practitioner - Otolaryngology .
Bills through: Wilmington Health Pllc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Studies
JEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated in 1992
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Questions & Answers
Does Dr. Gregory Charles Zwack have affiliation with practices?
Dr. Gregory Charles Zwack is affiliated with Wilmington Health. For the full list of practices see this list.
Where can you meet with Dr. Gregory Charles Zwack?
Dr. Gregory Charles Zwack's office is located at 6727 Parker Farm Drive in Wilmington, NC 28405.
Does Dr. Gregory Charles Zwack accept patients with Cigna Healthcare?
Yes, Dr. Gregory Charles Zwack is listed in-network for Cigna Healthcare through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Has Dr. Gregory Charles Zwack affiliation with hospitals?
Dr. Gregory Charles Zwack is affiliated with NEW HANOVER REGIONAL MEDICAL CENTER.
What conditions does Dr. Gregory Charles Zwack treat?
Dr. Gregory Charles Zwack provides treatment for Deafness, Dizziness, Ear Wax, Inner Ear Disorders, Laryngitis, Swimmer's Ear. For the full list see this list.